Change wording

misago/templates/misago/login.html

@@ -48,7 +48,7 @@
 
       <h4>
         <span class="fa fa-fw fa-question-circle"></span>
-        {% trans "Solving problems:" %}
+        {% trans "Common problems:" %}
       </h4>
       <ul class="list-unstyled signin-help">
         <li>