Merge pull request #8258 from ember-cli/tweak-error-message

Tweak Error Message

lib/models/addon.js

@@ -418,7 +418,7 @@ let addonProto = {
           let pathToDisplay = process.cwd() === this.root ? process.cwd() : path.relative(process.cwd(), this.root);
 
           throw new SilentError(
-            'Your names in package.json and index.js should match. ' +
+            'ember-cli: Your names in package.json and index.js should match. ' +
               `The addon in ${pathToDisplay} currently have '${parentName}' in package.json and '${this.name}' in index.js. ` +
               'Until ember-cli v3.9, this error can be disabled by setting env variable EMBER_CLI_IGNORE_ADDON_NAME_MISMATCH to "true". ' +
               'For more information about this workaround, see: https://github.com/ember-cli/ember-cli/pull/7950.'