repair: fix typo in warning message

mercurial/repair.py

@@ -237,7 +237,7 b' def rebuildfncache(ui, repo):'
 
     if 'fncache' not in repo.requirements:
         ui.warn(_('(not rebuilding fncache because repository does not '
-                  'support fncache\n'))
+                  'support fncache)\n'))
         return
 
     lock = repo.lock()

tests/test-fncache.t

@@ -308,7 +308,7 b' debugrebuildfncache does nothing unless '
   $ hg --config format.usefncache=false init nofncache
   $ cd nofncache
   $ hg debugrebuildfncache
-  (not rebuilding fncache because repository does not support fncache
+  (not rebuilding fncache because repository does not support fncache)
 
   $ cd ..