Remove extra horizontal line and spacing

Author: tengqm

layouts/docs/baseof.html

@@ -25,7 +25,7 @@
             {{ if (and (not .Params.hide_feedback) (.Site.Params.ui.feedback.enable) (.Site.GoogleAnalytics)) }}
               {{ partial "feedback.html" .Site.Params.ui.feedback }}
             {{ end }}
-            <div class="text-muted mt-5 pt-3 border-top">{{ partial "page-meta-lastmod.html" . }}</div>
+            {{ partial "page-meta-lastmod.html" . }}
             {{ if (.Site.DisqusShortname) }}
               <br />
               {{ partial "disqus-comment.html" . }}
@@ -40,4 +40,4 @@
     </div>
     {{ partial "scripts.html" . }}
   </body>
-</html>
+</html>