docs/website/support: clarify the bugtracker is for bugs only

The bugtracker is intended to be used for bug reports only, so clarify
it's not meant to be used for "any problem".

Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

docs/website/support.html

@@ -72,7 +72,7 @@
 		  <img class="img-responsive" src="images/bug-buddy.png" style="max-width:50px; margin-bottom:10px;">
 		</div>
 		<div class="col-sm-11">
-		  <p>If you encounter any problem while using Buildroot, you can use the
+		  <p>If you think you found a bug in Buildroot, you can use the
 		    <a href="https://bugs.buildroot.org/">Bug Tracker</a> to post your bugs and/or
 		    participate to find solutions to existing problems.</p>