Merge pull request #5612 from Archaeopteryx/master

Add missing comma to German add-on description

Author: timvandermeij

l10n/de/metadata.inc

@@ -2,7 +2,7 @@
       <Description>
         <em:locale>de</em:locale>
         <em:name>PDF Viewer</em:name>
-        <em:description>Nutzt HTML5 um PDFs direkt in Firefox anzuzeigen.</em:description>
+        <em:description>Nutzt HTML5, um PDFs direkt in Firefox anzuzeigen.</em:description>
       </Description>
     </em:localized>