Remove .html suffix from shortcodes calls.

It's the default.

site/content/docs/5.1/content/tables.md

@@ -559,7 +559,7 @@ A `<caption>` functions like a heading for a table. It helps users with screen r
 <div class="bd-example">
   <table class="table">
     <caption>List of users</caption>
-    {{< partial "table-content.html" >}}
+    {{< partial "table-content" >}}
   </table>
 </div>
 

site/layouts/partials/home/masthead.html

@@ -23,6 +23,6 @@
         </p>
       </div>
     </div>
-    {{ partial "ads.html" . }}
+    {{ partial "ads" . }}
   </div>
 </div>