Update addition/removal instructions.

Co-authored-by: Hugo van Kemenade <[email protected]>

Author: rodrigogiraoserrao

config/index.html.tmpl

@@ -134,8 +134,8 @@ src="/static/images/python-logo.gif" alt="homepage" border="0" /></a>
 
 <li>
     <i>
-    To request addition or removal:<br />
-    Open an issue on <a href="https://github.com/python/planet/issues">github</a><br />
+    To request addition or removal,
+    <a href="https://github.com/python/planet">open a PR or issue</a>
     </i>
 </li>
           </ul></li>

config/titles_only.html.tmpl

@@ -120,8 +120,8 @@ src="/static/images/python-logo.gif" alt="homepage" border="0" /></a>
 
 <li>
     <i>
-    To request addition or removal:<br />
-    Open an issue on <a href="https://github.com/python/planet/issues">github</a><br />
+    To request addition or removal,
+    <a href="https://github.com/python/planet">open a PR or issue</a>
     </i>
 </li>
           </ul></li>