[docs] Fix build: remove pymdownx.githubemoji

rogerwang · rogerwang · commit fc9b57107814 · 2019-09-20T01:24:18.000-06:00
diff --git a/docs/For Developers/Writing Documents for NW.js.md b/docs/For Developers/Writing Documents for NW.js.md
@@ -78,7 +78,6 @@ Currently the documentation site of NW.js enables following extensions for gener
 * pymdownx.tilde
 * pymdownx.caret
 * pymdownx.smartsymbols
-* pymdownx.githubemoji
 * pymdownx.tasklist
 * pymdownx.progressbar
 * pymdownx.headeranchor
