fix: Type in error message

Fixes a typo in an error message

Author: HeroicEric

tests/lib/rules-preprocessor/gjs-gts-parser-test.js

@@ -170,7 +170,7 @@ const invalid = [
         message:
           'Parsing error: Unexpected token. A constructor, method, accessor, or property was expected.\n' +
           'To lint Gjs/Gts files please follow the setup guide at https://github.com/ember-cli/eslint-plugin-ember#gtsgjs\n' +
-          'Note that this error can also happen if you have multiple versions of ember-eslint-plugin in your node_modules',
+          'Note that this error can also happen if you have multiple versions of eslint-plugin-ember in your node_modules',
         line: 3,
         column: 6,
       },