docs: update ESLint migration link

(cherry picked from commit d64dc76)

Author: bbaia

packages/angular/cli/commands/lint-long.md

@@ -4,4 +4,4 @@ When a project name is not supplied, it will execute for all projects.
 The default linting tool is [TSLint](https://palantir.github.io/tslint/), and the default configuration is specified in the project's `tslint.json` file.
 
 **Note**: TSLint has been discontinued and support has been deprecated in the Angular CLI. The options shown below are for the deprecated TSLint builder.
-To opt-in using the community driven ESLint builder, see [angular-eslint](https://github.com/angular-eslint/angular-eslint#migrating-from-codelyzer-and-tslint) README.
+To opt-in using the community driven ESLint builder, see [angular-eslint](https://github.com/angular-eslint/angular-eslint#migrating-an-angular-cli-project-from-codelyzer-and-tslint) README.

packages/angular_devkit/build_angular/src/tslint/index.ts

@@ -28,7 +28,7 @@ async function _run(
 ): Promise<BuilderOutput> {
   context.logger.warn(
     `TSLint's support is discontinued and we're deprecating its support in Angular CLI.\n` +
-    'To opt-in using the community driven ESLint builder, see: https://github.com/angular-eslint/angular-eslint#migrating-from-codelyzer-and-tslint.',
+    'To opt-in using the community driven ESLint builder, see: https://github.com/angular-eslint/angular-eslint#migrating-an-angular-cli-project-from-codelyzer-and-tslint.',
   );
 
   const systemRoot = context.workspaceRoot;