feat: implement post-launch feedback

Resolves part of #1 (closed)

layouts/shortcodes/pages/participate.html

@@ -47,8 +47,24 @@
               compliance can join the working group.
             </p>
             <p>
-              Review the <a href="https://www.eclipse.org/org/workinggroups/open-regulatory-compliance-charter.php">Charter</a>, then <a href="/membership/#contact-us-about-membership">Contact Us</a>.
+              Review the Charter, then contact us.
             </p>
+            <div class="display-flex flex-wrap gap-5 margin-y-30">
+              <a 
+                class="btn btn-primary btn-pill btn-block-xs" 
+                href="https://www.eclipse.org/org/workinggroups/open-regulatory-compliance-charter.php"
+              >
+                <i class="fa fa-file margin-right-10" aria-hidden="true"></i>
+                Charter
+              </a>
+              <a 
+                class="btn btn-secondary btn-pill btn-block-xs" 
+                href="/membership/#contact-us-about-membership"
+              >
+                <i class="fa fa-comment margin-right-10" aria-hidden="true"></i>
+                Contact Us
+              </a>
+            </div>
           </div>
         </div>
       </div>