Forgot to add `omf cd` on help.

pkg/omf/cli/omf.help.fish

@@ -9,6 +9,7 @@ function omf.help
         "(omf::em)"t"(omf::off)"heme  List / Use themes.
        "(omf::em)"r"(omf::off)"emove  Remove a theme or package.
        "(omf::em)"u"(omf::off)"pdate  Update Oh My Fish.
+           "(omf::em)"c"(omf::off)"d  Change directory to plugin/theme directory.
           "(omf::em)"n"(omf::off)"ew  Create a new package from a template.
        "(omf::em)"s"(omf::off)"ubmit  Submit a package to the registry.
         "(omf::em)"q"(omf::off)"uery  Query environment variables.