Fix page link

docs/Gemfile

@@ -3,4 +3,3 @@ gem 'github-pages', group: :jekyll_plugins
 gem 'jekyll-redirect-from', group: :jekyll_plugins
 gem 'jekyll-seo-tag'
 gem 'jekyll-feed'
-gem "jekyll-github-metadata"

docs/_config.yml

@@ -9,7 +9,6 @@ logo: https://spacevim.org/SpaceVim.png
 permalink: /:title/
 
 plugins:
-  - jekyll-github-metadata
   - jekyll-redirect-from
   - jekyll-sitemap
   - jekyll-seo-tag

docs/_layouts/default.html

@@ -94,9 +94,9 @@
     </body>
     <root>
       <p align="center">
-            <span class="credits right">Hosted on GitHub &mdash; Theme by <a href="https://twitter.com/michigangraham">mattgraham</a></span>
+        <span class="credits right">Hosted on GitHub, <a href="https://github.com/SpaceVim/SpaceVim/edit/dev/docs/{{ page.path }}">Help improve this page</a> &mdash; Theme by <a href="https://twitter.com/michigangraham">mattgraham</a>,
+        </span>
       </p>
-          Please {% github_edit_link "Help improve this article" %}.
     </root>
 
 </html>