Change embedded emoji font from EmojiOne to Twemoji.

browser/fonts/README.txt

@@ -1,9 +1,9 @@
-EmojiOne Mozilla
+Twemoji Mozilla
 ================
 
-The upstream repository of EmojiOne Mozilla can be found at
+The upstream repository of Twemoji Mozilla can be found at
 
-  https://github.com/mozilla/emojione-colr
+  https://github.com/mozilla/twemoji-colr
 
 Please refer commit history for the current version of the font.
 This file purposely omit the version, so there is no need to update it here.

browser/fonts/moz.build

@@ -7,5 +7,5 @@
 if CONFIG['OS_ARCH'] in ('WINNT', 'Linux'):
     DIST_SUBDIR = ''
     FINAL_TARGET_FILES.fonts += [
-        'EmojiOneMozilla.ttf'
+        'TwemojiMozilla.ttf'
     ]