Fix test and change snapshot text for custom prompts

packages/jest-cli/src/__tests__/__snapshots__/watch.test.js.snap

@@ -30,7 +30,7 @@ Watch Usage
  › Press p to filter by a filename regex pattern.
  › Press t to filter by a test name regex pattern.
  › Press q to quit watch mode.
- › Press k to configured prompt.
+ › Press k to filter with a custom prompt.
  › Press Enter to trigger a test run.
 ",
 ]

packages/jest-cli/src/__tests__/watch.test.js

@@ -385,7 +385,10 @@ describe('Watch mode flows', () => {
       Object.assign({}, globalConfig, {
         rootDir: __dirname,
         watchPlugins: [
-          {config: {key: 'k', prompt: 'configured prompt'}, path: pluginPath},
+          {
+            config: {key: 'k', prompt: 'filter with a custom prompt'},
+            path: pluginPath,
+          },
         ],
       }),
       contexts,

packages/jest-config/src/__tests__/normalize.test.js

@@ -1127,8 +1127,8 @@ describe('watchPlugins', () => {
     );
 
     expect(options.watchPlugins).toEqual([
-      '/node_modules/my-watch-plugin',
-      '/root/path/to/plugin',
+      {config: {}, path: '/node_modules/my-watch-plugin'},
+      {config: {}, path: '/root/path/to/plugin'},
     ]);
   });
 });