hgweb: remove a couple of superfluous spaces in rss style

mercurial/templates/rss/bookmarks.tmpl

@@ -1,6 +1,6 b''
 {header}
-    <title>{repo|escape}: bookmarks </title>
+    <title>{repo|escape}: bookmarks</title>
     <description>{repo|escape} bookmark history</description>
     {entries%bookmarkentry}
   </channel>
 </rss>

mercurial/templates/rss/tags.tmpl

@@ -1,6 +1,6 b''
 {header}
-    <title>{repo|escape}: tags </title>
+    <title>{repo|escape}: tags</title>
     <description>{repo|escape} tag history</description>
     {entriesnotip%tagentry}
   </channel>
 </rss>