commands: typo in bundle abort message

This error trigger if one calls bundle with the wrong parameters and
it is thus not an error scripts will want to look for (they could and
should ensure that they call bundle with the correct parameters).

mercurial/commands.py

@@ -497,7 +497,7 b' def bundle(ui, repo, fname, dest=None, *'
         base = opts.get('base')
     if base:
         if dest:
-            raise util.Abort(_("--base is incompatible with specifiying "
+            raise util.Abort(_("--base is incompatible with specifying "
                                "a destination"))
         base = [repo.lookup(rev) for rev in base]
         # create the right base

tests/test-bundle-r.out

@@ -156,7 +156,7 b' checking files'
 4 files, 9 changesets, 7 total revisions
 rolling back last transaction
 % should fail
-abort: --base is incompatible with specifiying a destination
+abort: --base is incompatible with specifying a destination
 abort: repository default-push not found!
 2 changesets found
 4 changesets found