Update _config.yml (#11242)

Author: elorzafe

docs/_config.yml

@@ -9,6 +9,7 @@
 # 'bundle exec jekyll serve'. If you change this file, please restart the server process.
 
 # Site settings
+#
 # These are used to personalize your new site. If you look in the HTML files,
 # you will see them accessed via {{ site.title }}, {{ site.email }}, and so on.
 # You can create any custom variable you would like, and they will be accessible
@@ -341,4 +342,4 @@ js_libraries:
   - title: Ionic
     url: '?platform=ionic'
   - title: JavaScript
-    url: '?platform=purejs'
+    url: '?platform=purejs'