chore(integ-tests-alpha): integ tests link is incorrect (#26402)

This PR corrects integ tests link in an integ-runner doc and an error message.

----

*By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*

Author: go-to-k

packages/@aws-cdk/integ-runner/README.md

@@ -25,7 +25,7 @@ publishing this tool so that it can be used by the community and we would love t
 on use cases that the tool should support, or issues that prevent the tool from being used in your
 library.
 
-This tool is meant to be used with the [integ-tests](https://github.com/aws/aws-cdk/tree/main/packages/%40aws-cdk/integ-tests) library.
+This tool is meant to be used with the [integ-tests](https://github.com/aws/aws-cdk/tree/main/packages/%40aws-cdk/integ-tests-alpha) library.
 
 ## Usage
 

packages/@aws-cdk/integ-runner/lib/runner/integ-test-runner.ts

@@ -77,8 +77,8 @@ export class IntegTestRunner extends IntegRunner {
     // test then point the user to the new `IntegTest` construct
     if (!this.hasSnapshot() && this.isLegacyTest) {
       throw new Error(`${this.testName} is a new test. Please use the IntegTest construct ` +
-       'to configure the test\n' +
-        'https://github.com/aws/aws-cdk/tree/main/packages/%40aws-cdk/integ-tests',
+        'to configure the test\n' +
+        'https://github.com/aws/aws-cdk/tree/main/packages/%40aws-cdk/integ-tests-alpha',
       );
     }
   }

packages/@aws-cdk/integ-runner/test/runner/integ-test-runner.test.ts

@@ -675,4 +675,18 @@ describe('IntegTest watchIntegTest', () => {
       verbose: undefined,
     }));
   });
+
+  test('with error', () => {
+    expect(() => {
+      // WHEN
+      new IntegTestRunner({
+        cdk: cdkMock.cdk,
+        test: new IntegTest({
+          fileName: 'test/test-data/xxxxx.test-with-error.js',
+          discoveryRoot: 'test/test-data',
+        }),
+      });
+    // THEN
+    }).toThrowError('xxxxx.test-with-error is a new test. Please use the IntegTest construct to configure the test\nhttps://github.com/aws/aws-cdk/tree/main/packages/%40aws-cdk/integ-tests-alpha');
+  });
 });

packages/@aws-cdk/integ-runner/test/test-data/xxxxx.test-with-error.ts

@@ -0,0 +1 @@
+/// !cdk-integ test-stack