Chore: enable test-case-shorthand-strings on this codebase

Author: not-an-aardvark

Diff for: .eslintrc.js

@@ -24,6 +24,6 @@ module.exports = {
   rules: {
     'require-jsdoc': 'error',
     'eslint-plugin/report-message-format': ['error', '^[^a-z].*\\.$'],
-    'eslint-plugin/test-case-shorthand-strings': 'off',
+    'eslint-plugin/test-case-shorthand-strings': 'error',
   },
 };

Diff for: tests/lib/rules/require-meta-fixable.js

@@ -110,14 +110,12 @@ ruleTester.run('require-meta-fixable', rule, {
       `,
       errors: [MISSING_ERROR],
     },
-    {
-      code: `
-        module.exports = {
-          meta: {},
-          create(context) { context.report(node, message, data, fix); }
-        };
-      `,
-    },
+    `
+      module.exports = {
+        meta: {},
+        create(context) { context.report(node, message, data, fix); }
+      };
+    `,
   ],
 
   invalid: [