Add note about language tabs as comment in default yaml frontmatter

lord · lord · commit e890c4bb8b17 · 2017-07-17T11:08:57.000-07:00
diff --git a/source/index.html.md b/source/index.html.md
@@ -1,7 +1,7 @@
 ---
 title: API Reference
 
-language_tabs:
+language_tabs: # must be one of https://git.io/vQNgJ
   - shell
   - ruby
   - python
