fix(pkglint): library creation generates incorrect package names (#26330)

Fairly certain that `options.packageName` is only used in the README example generation so there should be no other side-effects.

The reason why this wasn't caught earlier is because we turned `rosetta:strict` off. I am working on a separate PR to fix those issues. These are not the only modules with faulty examples. The rest will be fixed in #26331

----

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

Author: kaizencc

packages/aws-cdk-lib/aws-backupgateway/README.md

@@ -16,7 +16,7 @@
 This module is part of the [AWS Cloud Development Kit](https://github.com/aws/aws-cdk) project.
 
 ```ts nofixture
-import * as backupgateway from '@aws-cdk/aws-backupgateway';
+import * as backupgateway from 'aws-cdk-lib/aws-backupgateway';
 ```
 
 <!--BEGIN CFNONLY DISCLAIMER-->

packages/aws-cdk-lib/aws-cleanrooms/README.md

@@ -16,7 +16,7 @@
 This module is part of the [AWS Cloud Development Kit](https://github.com/aws/aws-cdk) project.
 
 ```ts nofixture
-import * as cleanrooms from '@aws-cdk/aws-cleanrooms';
+import * as cleanrooms from 'aws-cdk-lib/aws-cleanrooms';
 ```
 
 <!--BEGIN CFNONLY DISCLAIMER-->

packages/aws-cdk-lib/aws-proton/README.md

@@ -16,7 +16,7 @@
 This module is part of the [AWS Cloud Development Kit](https://github.com/aws/aws-cdk) project.
 
 ```ts nofixture
-import * as proton from '@aws-cdk/aws-proton';
+import * as proton from 'aws-cdk-lib/aws-proton';
 ```
 
 <!--BEGIN CFNONLY DISCLAIMER-->

tools/@aws-cdk/pkglint/lib/library-creation.ts

@@ -24,7 +24,7 @@ export function createModuleDefinitionFromCfnNamespace(namespace: string): Modul
   const submoduleName = moduleName.replace('-', '_');
 
   const lowcaseModuleName = moduleBaseName.toLocaleLowerCase();
-  const packageName = `@aws-cdk/${moduleName}`;
+  const packageName = `aws-cdk-lib/${moduleName}`;
 
   // dotnet names
   const dotnetPackage = `Amazon.CDK.${moduleFamily}.${moduleBaseName}`;

tools/@aws-cdk/pkglint/test/libary-creation.test.ts

@@ -11,7 +11,7 @@ describe('createModuleDefinitionFromCfnNamespace', () => {
       moduleName: 'aws-ec2',
       moduleFamily: 'AWS',
       moduleBaseName: 'EC2',
-      packageName: '@aws-cdk/aws-ec2',
+      packageName: 'aws-cdk-lib/aws-ec2',
       dotnetPackage: 'Amazon.CDK.AWS.EC2',
       javaGroupId: 'software.amazon.awscdk',
       javaPackage: 'services.ec2',
@@ -30,7 +30,7 @@ describe('createModuleDefinitionFromCfnNamespace', () => {
       moduleName: 'aws-sam',
       moduleFamily: 'AWS',
       moduleBaseName: 'SAM',
-      packageName: '@aws-cdk/aws-sam',
+      packageName: 'aws-cdk-lib/aws-sam',
       dotnetPackage: 'Amazon.CDK.AWS.SAM',
       javaGroupId: 'software.amazon.awscdk',
       javaPackage: 'services.sam',
@@ -49,7 +49,7 @@ describe('createModuleDefinitionFromCfnNamespace', () => {
       moduleName: 'alexa-ask',
       moduleFamily: 'Alexa',
       moduleBaseName: 'ASK',
-      packageName: '@aws-cdk/alexa-ask',
+      packageName: 'aws-cdk-lib/alexa-ask',
       dotnetPackage: 'Amazon.CDK.Alexa.ASK',
       javaGroupId: 'software.amazon.awscdk',
       javaPackage: 'alexa.ask',
@@ -81,6 +81,6 @@ describe('createLibraryReadme', () => {
     await createLibraryReadme('Alexa::ASK', readmePath);
 
     const readme = fs.readFileSync(readmePath, { encoding: 'utf8' });
-    expect(readme).toContain("import * as alexa_ask from '@aws-cdk/alexa-ask';");
+    expect(readme).toContain("import * as alexa_ask from 'aws-cdk-lib/alexa-ask';");
   });
 });