docs(@schematics/angular): update code scaffolding doc to with ng generate --help

Author: MrJithil

modules/testing/builder/projects/hello-world-app/README.md

@@ -8,7 +8,7 @@ Run `ng serve` for a dev server. Navigate to `http://localhost:4200/`. The app w
 
 ## Code scaffolding
 
-Run `ng generate component component-name` to generate a new component. You can also use `ng generate directive|pipe|service|class|guard|interface|enum|module`.
+Run `ng generate component component-name` to generate a new component. You can also use `ng generate --help` to see all the available schematics you can generate.
 
 ## Build
 

packages/schematics/angular/workspace/files/README.md.template

@@ -8,7 +8,7 @@ Run `ng serve` for a dev server. Navigate to `http://localhost:4200/`. The appli
 
 ## Code scaffolding
 
-Run `ng generate component component-name` to generate a new component. You can also use `ng generate directive|pipe|service|class|guard|interface|enum|module`.
+Run `ng generate component component-name` to generate a new component. You can also use `ng generate --help` to see all the available schematics you can generate.
 
 ## Build
 

tests/legacy-cli/e2e/assets/15.0-project/README.md

@@ -8,7 +8,7 @@ Run `ng serve` for a dev server. Navigate to `http://localhost:4200/`. The appli
 
 ## Code scaffolding
 
-Run `ng generate component component-name` to generate a new component. You can also use `ng generate directive|pipe|service|class|guard|interface|enum|module`.
+Run `ng generate component component-name` to generate a new component. You can also use `ng generate --help` to see all the available schematics you can generate.
 
 ## Build
 

tests/legacy-cli/e2e/assets/18-ssr-project-webpack/README.md

@@ -8,7 +8,7 @@ Run `ng serve` for a dev server. Navigate to `http://localhost:4200/`. The appli
 
 ## Code scaffolding
 
-Run `ng generate component component-name` to generate a new component. You can also use `ng generate directive|pipe|service|class|guard|interface|enum|module`.
+Run `ng generate component component-name` to generate a new component. You can also use `ng generate --help` to see all the available schematics you can generate.
 
 ## Build
 

tests/legacy-cli/e2e/assets/19-ssr-project-webpack/README.md

@@ -8,7 +8,7 @@ Run `ng serve` for a dev server. Navigate to `http://localhost:4200/`. The appli
 
 ## Code scaffolding
 
-Run `ng generate component component-name` to generate a new component. You can also use `ng generate directive|pipe|service|class|guard|interface|enum|module`.
+Run `ng generate component component-name` to generate a new component. You can also use `ng generate --help` to see all the available schematics you can generate.
 
 ## Build