Remove some stray unicode look-alike chars from comments.

$ git grep -n -P '[^\x00-\x7F] showed these in strings in test cases
as expected, but also in two unusual places.

Change-Id: I7505520e682cbd6b28a19262b98bf38a922b986c
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/114150
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
Auto-Submit: Tom Sepez <tsepez@chromium.org>
diff --git a/core/fpdfapi/parser/cpdf_hint_tables.cpp b/core/fpdfapi/parser/cpdf_hint_tables.cpp
index 1e43a59..282ec89 100644
--- a/core/fpdfapi/parser/cpdf_hint_tables.cpp
+++ b/core/fpdfapi/parser/cpdf_hint_tables.cpp
@@ -325,7 +325,7 @@
   }
 
   m_SharedObjGroupInfos.resize(dwSharedObjTotal);
-  // Table F.6 –  Shared object hint table, shared object group entries:
+  // Table F.6 - Shared object hint table, shared object group entries:
   // Item 1: A number that, when added to the least shared object
   // group length.
   FX_SAFE_FILESIZE prev_shared_group_end_offset = m_szFirstPageObjOffset;
diff --git a/core/fpdfapi/parser/fpdf_parser_utility.cpp b/core/fpdfapi/parser/fpdf_parser_utility.cpp
index c2f626a..f2e3e36 100644
--- a/core/fpdfapi/parser/fpdf_parser_utility.cpp
+++ b/core/fpdfapi/parser/fpdf_parser_utility.cpp
@@ -38,7 +38,7 @@
     'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R',
     'R',
 
-    // SP    !    "    #    $    %    &    ´    (    )    *    +    ,    -    .
+    // SP    !    "    #    $    %    &    '    (    )    *    +    ,    -    .
     // /
     'W', 'R', 'R', 'R', 'R', 'D', 'R', 'R', 'D', 'D', 'R', 'N', 'R', 'N', 'N',
     'D',