narrow: fix command name in error messsage

Differential Revision: https://phab.mercurial-scm.org/D5982

hgext/narrow/narrowcommands.py

@@ -348,7 +348,7 b' def trackedcmd(ui, repo, remotepath=None'
     """
     opts = pycompat.byteskwargs(opts)
     if repository.NARROW_REQUIREMENT not in repo.requirements:
-        raise error.Abort(_('the narrow command is only supported on '
+        raise error.Abort(_('the tracked command is only supported on '
                             'respositories cloned with --narrow'))
 
     # Before supporting, decide whether it "hg tracked --clear" should mean

tests/test-narrow-trackedcmd.t

@@ -218,3 +218,13 b' Testing with passing a out of wdir file'
   adding file changes
   added 3 changesets with 0 changes to 0 files
   new changesets *:* (glob)
+
+  $ cd ..
+
+Testing tracked command on a non-narrow repo
+
+  $ hg init non-narrow
+  $ cd non-narrow
+  $ hg tracked --addinclude foobar
+  abort: the tracked command is only supported on respositories cloned with --narrow
+  [255]