diff --git a/src/quantecon_book_theme/theme/quantecon_book_theme/layout.html b/src/quantecon_book_theme/theme/quantecon_book_theme/layout.html
index 10785ea..5b7865a 100644
--- a/src/quantecon_book_theme/theme/quantecon_book_theme/layout.html
+++ b/src/quantecon_book_theme/theme/quantecon_book_theme/layout.html
@@ -250,11 +250,11 @@
                     {%- else %}
                         <li data-tippy-content="Download PDF" onClick="window.print()"><i data-feather="file"></i></li>
                     {%- endif %}
-                    <!-- 
+                    <!--
                     # Enable if looking for link to specific document hosted on GitHub
-                    <li data-tippy-content="View Source"><a target="_blank" href="{{ theme_repository_url }}{{github_sourcefolder}}/{{ sourcename }}" download><i data-feather="github"></i></a></li> 
+                    <li data-tippy-content="View Source"><a target="_blank" href="{{ theme_repository_url }}{{github_sourcefolder}}/{{ sourcename }}" download><i data-feather="github"></i></a></li>
                     -->
-                    <li data-tippy-content="View Source"><a target="_blank" href="{{ theme_repository_url }}" download><i data-feather="github"></i></a></li> 
+                    <li data-tippy-content="View Source"><a target="_blank" href="{{ theme_repository_url }}" download><i data-feather="github"></i></a></li>
                 </ul>
 
             </div>