Make join page a little more friendly

Previous text implied that you had to show up to every meeting to join
the club, new text only says that we host events every week!

acmsite/templates/join.html

@@ -5,8 +5,8 @@
 <h1>Join ACM!</h1>
 
 <p>Want to join us? Show up to our <a href="{{ url_for('main.events')}}">GBMs and
-                                                                      events</a>
-every week!</p>
+                                                                      events</a>,
+                                                                  we hold them every week!</p>
 
 <p>You can also connect with us online, use these links to find us!</p>