templates: fix missing closing brace in map-cmdline.status

Currently the parser does not validate the last closing brace, but future
patches will make it less permissive for this kind of syntax errors.

mercurial/templates/map-cmdline.status

@@ -16,7 +16,7 b' lfile_adds = \'{file_adds % "{ifcontains'
                                          '{lfile_add}')}"}'
 lfile_add = '{label("status.added", "A {file}\n")}'
 
-lfile_copies_switch = '{file_copies_switch % "{lfile_copy_orig}{lfile_copy_dest}"'
+lfile_copies_switch = '{file_copies_switch % "{lfile_copy_orig}{lfile_copy_dest}"}'
 lfile_copy_orig = '{label("status.added", "A {name}\n")}'
 lfile_copy_dest = '{label("status.copied", "  {source}\n")}'