Properly spell out UTF-16LE.

A bunch of places wrote it as UTF16-LE.

Change-Id: Id42fcfc746f43b3d921aca59687aa760857c4f3b
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/54670
Reviewed-by: dsinclair <dsinclair@chromium.org>
Commit-Queue: dsinclair <dsinclair@chromium.org>
diff --git a/core/fxge/win32/fx_win32_device.cpp b/core/fxge/win32/fx_win32_device.cpp
index 9c948e7..3361e7c 100644
--- a/core/fxge/win32/fx_win32_device.cpp
+++ b/core/fxge/win32/fx_win32_device.cpp
@@ -37,7 +37,7 @@
 
 const struct {
   const char* m_pFaceName;
-  const char* m_pVariantName;  // Note: UTF16-LE terminator required.
+  const char* m_pVariantName;  // Note: UTF-16LE terminator required.
 } g_VariantNames[] = {
     {"DFKai-SB", "\x19\x6A\x77\x69\xD4\x9A\x00\x00"},
 };
diff --git a/public/fpdf_annot.h b/public/fpdf_annot.h
index 7fb2405..ee81ae8 100644
--- a/public/fpdf_annot.h
+++ b/public/fpdf_annot.h
@@ -402,7 +402,7 @@
 //
 //   annot  - handle to an annotation.
 //   key    - the key to the dictionary entry to be set, encoded in UTF-8.
-//   value  - the string value to be set, encoded in UTF16-LE.
+//   value  - the string value to be set, encoded in UTF-16LE.
 //
 // Returns true if successful.
 FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
@@ -421,7 +421,7 @@
 //
 //   annot  - handle to an annotation.
 //   key    - the key to the requested dictionary entry, encoded in UTF-8.
-//   buffer - buffer for holding the value string, encoded in UTF16-LE.
+//   buffer - buffer for holding the value string, encoded in UTF-16LE.
 //   buflen - length of the buffer in bytes.
 //
 // Returns the length of the string value in bytes.
@@ -454,7 +454,7 @@
 //   annot          - handle to an annotation.
 //   appearanceMode - the appearance mode (normal, rollover or down) for which
 //                    to get the AP.
-//   value          - the string value to be set, encoded in UTF16-LE. If
+//   value          - the string value to be set, encoded in UTF-16LE. If
 //                    nullptr is passed, the AP is cleared for that mode. If the
 //                    mode is Normal, APs for all modes are cleared.
 //
@@ -477,7 +477,7 @@
 //   annot          - handle to an annotation.
 //   appearanceMode - the appearance mode (normal, rollover or down) for which
 //                    to get the AP.
-//   buffer         - buffer for holding the value string, encoded in UTF16-LE.
+//   buffer         - buffer for holding the value string, encoded in UTF-16LE.
 //   buflen         - length of the buffer in bytes.
 //
 // Returns the length of the string value in bytes.
@@ -578,7 +578,7 @@
 //             FPDFDOC_InitFormFillEnvironment.
 //   annot   - handle to an annotation.
 //   index   - numeric index of the option in the "Opt" array
-//   buffer  - buffer for holding the value string, encoded in UTF16-LE.
+//   buffer  - buffer for holding the value string, encoded in UTF-16LE.
 //   buflen  - length of the buffer in bytes.
 //
 // Returns the length of the string value in bytes.
diff --git a/public/fpdf_attachment.h b/public/fpdf_attachment.h
index 1c424f6..e92c058 100644
--- a/public/fpdf_attachment.h
+++ b/public/fpdf_attachment.h
@@ -64,7 +64,7 @@
 // and the returned length is 0.
 //
 //   attachment - handle to an attachment.
-//   buffer     - buffer for holding the file name, encoded in UTF16-LE.
+//   buffer     - buffer for holding the file name, encoded in UTF-16LE.
 //   buflen     - length of the buffer in bytes.
 //
 // Returns the length of the file name in bytes.
@@ -101,7 +101,7 @@
 //
 //   attachment - handle to an attachment.
 //   key        - the key to the dictionary entry, encoded in UTF-8.
-//   value      - the string value to be set, encoded in UTF16-LE.
+//   value      - the string value to be set, encoded in UTF-16LE.
 //
 // Returns true if successful.
 FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
@@ -121,7 +121,7 @@
 //
 //   attachment - handle to an attachment.
 //   key        - the key to the requested string value, encoded in UTF-8.
-//   buffer     - buffer for holding the string value encoded in UTF16-LE.
+//   buffer     - buffer for holding the string value encoded in UTF-16LE.
 //   buflen     - length of the buffer in bytes.
 //
 // Returns the length of the dictionary value string in bytes.
diff --git a/public/fpdf_edit.h b/public/fpdf_edit.h
index 92e8964..97d1bb5 100644
--- a/public/fpdf_edit.h
+++ b/public/fpdf_edit.h
@@ -335,7 +335,7 @@
 // Get the name of a content mark.
 //
 //   mark       - handle to a content mark.
-//   buffer     - buffer for holding the returned name in UTF16-LE. This is only
+//   buffer     - buffer for holding the returned name in UTF-16LE. This is only
 //                modified if |buflen| is longer than the length of the name.
 //                Optional, pass null to just retrieve the size of the buffer
 //                needed.
@@ -365,7 +365,7 @@
 //
 //   mark       - handle to a content mark.
 //   index      - index of the property.
-//   buffer     - buffer for holding the returned key in UTF16-LE. This is only
+//   buffer     - buffer for holding the returned key in UTF-16LE. This is only
 //                modified if |buflen| is longer than the length of the key.
 //                Optional, pass null to just retrieve the size of the buffer
 //                needed.
@@ -413,7 +413,7 @@
 //
 //   mark       - handle to a content mark.
 //   key        - string key of the property.
-//   buffer     - buffer for holding the returned value in UTF16-LE. This is
+//   buffer     - buffer for holding the returned value in UTF-16LE. This is
 //                only modified if |buflen| is longer than the length of the
 //                value.
 //                Optional, pass null to just retrieve the size of the buffer
@@ -1204,7 +1204,7 @@
 // Returns the number of bytes in the text (including the trailing NUL
 // character) on success, 0 on error.
 //
-// Regardless of the platform, the |buffer| is always in UTF16-LE encoding.
+// Regardless of the platform, the |buffer| is always in UTF-16LE encoding.
 // If |length| is less than the returned length, or |buffer| is NULL, |buffer|
 // will not be modified.
 FPDF_EXPORT unsigned long FPDF_CALLCONV
diff --git a/public/fpdf_formfill.h b/public/fpdf_formfill.h
index 4bedfb5..bf5005c 100644
--- a/public/fpdf_formfill.h
+++ b/public/fpdf_formfill.h
@@ -1434,7 +1434,7 @@
  *          page        -   Handle to the page. Returned by FPDF_LoadPage
  *                          function.
  *          buffer      -   Buffer for holding the form text, encoded in
- *                          UTF16-LE. If NULL, |buffer| is not modified.
+ *                          UTF-16LE. If NULL, |buffer| is not modified.
  *          buflen      -   Length of |buffer| in bytes. If |buflen| is less
                             than the length of the form text string, |buffer| is
                             not modified.
@@ -1457,7 +1457,7 @@
  *          page        -   Handle to the page. Returned by FPDF_LoadPage
  *                          function.
  *          buffer      -   Buffer for holding the selected text, encoded in
- *                          UTF16-LE. If NULL, |buffer| is not modified.
+ *                          UTF-16LE. If NULL, |buffer| is not modified.
  *          buflen      -   Length of |buffer| in bytes. If |buflen| is less
                             than the length of the selected text string,
                             |buffer| is not modified.