Force LF line ending for the AUTHORS file

Also sort the list using ASCII sort.

Change-Id: Iff92e6039d00e51afbed2d3f94784cfbae186ac7
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/116734
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: Thomas Sepez <tsepez@google.com>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
diff --git a/.gitattributes b/.gitattributes
index 953c317..597394b 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -18,10 +18,11 @@
 .gitattributes text eol=lf
 .gitignore text eol=lf
 .vpython text eol=lf
-codereview.settings text eol=lf
+AUTHORS text eol=lf
 DEPS text eol=lf
 LICENSE text eol=lf
 OWNERS text eol=lf
+codereview.settings text eol=lf
 
 # Skip Tricium on expectation files.
 *_expected.txt -tricium