add Becoming a Maintainer link on website.

Author: ssurbhi560

index.html.tmpl

@@ -258,6 +258,11 @@
                        </li>
                       </ul>
                     </p>
+                    <p>
+                        If you would like to know how to become a maintainer for a feedstock, please visit <a href="https://conda-forge.org/docs/orga/guidelines.html#becoming-a-maintainer">here</a> to learn more.
+                    </p>
+                    <br />
+
                     <h3 id="add_recipe">Add a recipe</h2>
                     <p>
                       <ul class="fa-ul ul-instructions">