Adds an extra paragraph about pinned links

Author: KeiranWDigital

availability-process.html

@@ -18,7 +18,9 @@ <h1>Availability Process</h1>
     <p>Mentors are expected to fill in their availability to help at CodeWith events. We recognise this may change but
       it gives the event coordinator a starting point to find mentors.</p>
 
-    <p>A monthly reminder will be sent out in the <a href="https://codewithpeople.slack.com/archives/G018BBQ86PK">#admin</a> and <a href="https://codewithpeople.slack.com/archives/G017ZSY63GS">#mentor</a> channel on Slack to update the spreadsheet and add new months as the year moves on. 
+    <p>A monthly reminder will be sent out in the <a href="https://codewithpeople.slack.com/archives/G018BBQ86PK">#admin</a> and <a href="https://codewithpeople.slack.com/archives/G017ZSY63GS">#mentor</a> channels on Slack to update the spreadsheet and add new months as the year moves on. 
     </p>
+
+    <p>The link will also be pinned to the <a href="https://codewithpeople.slack.com/archives/G018BBQ86PK">#admin</a> and <a href="https://codewithpeople.slack.com/archives/G017ZSY63GS">#mentor</a> channels.</p>
   </div>
 </div>