Fix Canonical logo to not appear as cut

foundation.gnome.org/img/logos/Makefile.am

@@ -3,7 +3,7 @@ urlpath = /img/logos
 page_SCRIPTS =
 
 page_DATA = \
-	canonical.jpg \
+	canonical.png \
 	collabora.png \
 	debian.gif \
 	fluendo.png \

foundation.gnome.org/index.wml

@@ -89,7 +89,7 @@
 
     <h2>Sponsors</h2>
     <div class="center">
-      <a href="http://www.canonical.com/"><img src="img/logos/canonical.jpg" alt="Canonical" border="0" hspace="8" vspace="5" align="middle" /></a>
+      <a href="http://www.canonical.com/"><img src="img/logos/canonical.png" alt="Canonical" border="0" hspace="8" vspace="5" align="middle" /></a>
       <a href="http://www.collabora.co.uk/"><img src="img/logos/collabora.png" alt="Collabora" border="0" hspace="8" vspace="5" align="middle" /></a>
       <a href="http://www.debian.org/"><img src="img/logos/debian.gif" alt="Debian" border="0" hspace="8" vspace="5" align="middle" /></a>
       <a href="http://www.fsf.org/"><img src="img/logos/fsf.png" alt="Free Software Foundation" border="0" hspace="8" vspace="5" align="middle" /></a>