Updates to use the cthulhu name with out the go suffix.

CONTRIBUTING.md

@@ -9,7 +9,7 @@ directly from a Tentacle.
 
 Before publishing catalog entries, validate metadata and source, review grants,
 and test the actual command through the host. Run `make check` for this repository.
-For reader changes, also run relevant existing Cthulhu-Go tests. Xorg regressions
+For reader changes, also run relevant existing Cthulhu tests. Xorg regressions
 block a contribution. Verify keyboard bindings, learn mode, remapping, ordinary
 reading, speech interruption, speech modes, lock/handoff and connected Braille
 where affected. Automated results alone cannot prove accessibility acceptance.