build(docs-infra): upgrade cli command docs sources to 18d979cdc (#29437)

Updating [angular#master](https://github.com/angular/angular/tree/master) from [cli-builds#master](https://github.com/angular/cli-builds/tree/master).
Relevant changes in [commit range](cafa558cf...18d979cdc):

**Added**
- help/analytics.json

**Modified**
- help/add.json
- help/build.json
- help/generate.json
- help/new.json
- help/serve.json

PR Close #29437

aio/package.json

@@ -19,7 +19,7 @@
     "build-local": "yarn ~~build",
     "prebuild-with-ivy": "yarn setup-local && yarn ivy-ngcc --properties module es2015",
     "build-with-ivy": "node scripts/build-with-ivy",
-    "extract-cli-command-docs": "node tools/transforms/cli-docs-package/extract-cli-commands.js cafa558cf",
+    "extract-cli-command-docs": "node tools/transforms/cli-docs-package/extract-cli-commands.js 18d979cdc",
     "lint": "yarn check-env && yarn docs-lint && ng lint && yarn example-lint && yarn tools-lint",
     "test": "yarn check-env && ng test",
     "pree2e": "yarn check-env && yarn update-webdriver",