chore: Fix GitHub typo Git'h'ub to Git'H'ub. (#3935)

Author: potato4d

CONTRIBUTING.md

@@ -219,7 +219,7 @@ changes to be accepted, the CLA must be signed. It's a quick process, we promise
 [commit-message-format]: https://docs.google.com/document/d/1QrDFcIiPjSLDn3EL15IJygNPiHORgU1_OOAqWjiDU5Y/edit#
 [corporate-cla]: http://code.google.com/legal/corporate-cla-v1.0.html
 [dev-doc]: https://github.com/angular/angular/blob/master/DEVELOPER.md
-[github]: https://github.com/angular/angular-cli
+[GitHub]: https://github.com/angular/angular-cli
 [gitter]: https://gitter.im/angular/angular-cli
 [individual-cla]: http://code.google.com/legal/individual-cla-v1.0.html
 [js-style-guide]: https://google.github.io/styleguide/jsguide.html

README.md

@@ -243,11 +243,11 @@ This will do the following:
 - rebuilds the app in production mode at the current `HEAD`
 - creates a local `gh-pages` branch if one doesn't exist
 - moves your app to the `gh-pages` branch and creates a commit
-- edit the base tag in index.html to support github pages
-- pushes the `gh-pages` branch to github
+- edit the base tag in index.html to support GitHub Pages
+- pushes the `gh-pages` branch to GitHub
 - returns back to the original `HEAD`
 
-Creating the repo requires a token from github, and the remaining functionality
+Creating the repo requires a token from GitHub, and the remaining functionality
 relies on ssh authentication for all git operations that communicate with github.com.
 To simplify the authentication, be sure to [setup your ssh keys](https://help.github.com/articles/generating-ssh-keys/).
 
@@ -257,7 +257,7 @@ If you are deploying a [user or organization page](https://help.github.com/artic
 ng github-pages:deploy --user-page --message "Optional commit message"
 ```
 
-This command pushes the app to the `master` branch on the github repo instead
+This command pushes the app to the `master` branch on the GitHub repo instead
 of pushing to `gh-pages`, since user and organization pages require this.
 
 

packages/angular-cli/blueprints/ng2/files/README.md

@@ -22,9 +22,9 @@ Run `ng test` to execute the unit tests via [Karma](https://karma-runner.github.
 Run `ng e2e` to execute the end-to-end tests via [Protractor](http://www.protractortest.org/).
 Before running the tests make sure you are serving the app via `ng serve`.
 
-## Deploying to Github Pages
+## Deploying to GitHub Pages
 
-Run `ng github-pages:deploy` to deploy to Github Pages.
+Run `ng github-pages:deploy` to deploy to GitHub Pages.
 
 ## Further help
 

packages/angular-cli/commands/github-pages-deploy.ts

@@ -51,12 +51,12 @@ const githubPagesDeployCommand = Command.extend({
             name: 'gh-token',
             type: String,
             default: '',
-            description: 'Github token'
+            description: 'GitHub token'
         }, {
             name: 'gh-username',
             type: String,
             default: '',
-            description: 'Github username'
+            description: 'GitHub username'
         }, {
             name: 'base-href',
             type: String,