Updated the ReactJS Home URL (#22195)

* Updated ReactJS links in Blogs

* DOC: Updated ReactJS links

* Updated ReactJS links in packages README

Author: visshaljagtap

docs/blog/2017-02-21-1-0-progress-update-where-came-from-where-going/index.md

@@ -57,7 +57,7 @@ including blogs, marketing sites, documentation sites, and e-commerce.
 It wraps three of the most popular web app tools into a cohesive website
 framework:
 
-- [React](https://facebook.github.io/react/) from Facebook for building UIs
+- [React](https://reactjs.org/) from Facebook for building UIs
 - [Webpack](https://webpack.js.org/) for bundling JavaScript and CSS
 - [GraphQL](http://graphql.org/) from Facebook for declarative data queries
 

docs/blog/2017-07-19-creating-a-blog-with-gatsby/index.md

@@ -647,7 +647,7 @@ Now go build something great.
     (previous link), and expands upon it with a bunch of features and some more
     advanced functionality
 
-[react-dom-server]: https://facebook.github.io/react/docs/react-dom-server.html
+[react-dom-server]: https://reactjs.org/docs/react-dom-server.html
 [gatsby-release]: /blog/gatsby-v1/
 [gatsby-plugins]: /docs/plugins/
 [gatsby-plugin-catch-links]: /packages/gatsby-plugin-catch-links/

docs/blog/2017-09-18-gatsby-modern-static-generation/index.md

@@ -70,7 +70,7 @@ changes you want to make so it applies only required changes, thus making the
 rendering much faster.
 
 If you use React with
-[server-side rendering](https://facebook.github.io/react/docs/react-dom-server.html),
+[server-side rendering](https://reactjs.org/docs/react-dom-server.html),
 your flow looks something like this:
 
 - A browser requests a page

docs/docs/browser-support.md

@@ -2,7 +2,7 @@
 title: Browser Support
 ---
 
-Gatsby supports [the same browsers as the current stable version of React.js](https://facebook.github.io/react/docs/react-dom.html#browser-support) which is currently IE9+ as well as the most recent versions of other popular browsers.
+Gatsby supports [the same browsers as the current stable version of React.js](https://reactjs.org/docs/react-dom.html#browser-support) which is currently IE9+ as well as the most recent versions of other popular browsers.
 
 ## Polyfills
 

docs/docs/building-with-components.md

@@ -19,7 +19,7 @@ The following model shows how data from a source can be queried by GraphQL for u
 
 <LayerModel initialLayer="View" />
 
-[Thinking in React](https://facebook.github.io/react/docs/thinking-in-react.html)
+[Thinking in React](https://reactjs.org/docs/thinking-in-react.html)
 is a good resource for learning how to structure applications with React.
 
 ## How does Gatsby use React Components?

packages/gatsby-plugin-glamor/README.md

@@ -24,7 +24,7 @@ Glamor
 [provides many convenient ways to style your components](https://github.com/threepointone/glamor/blob/master/docs/howto.md).
 One particularly convenient (and suggested) way is to use its `css` prop. It
 works exactly the same as the
-[default `style` prop](https://facebook.github.io/react/docs/dom-elements.html#style)
+[default `style` prop](https://reactjs.org/docs/dom-elements.html#style)
 except it supports the entire CSS language. So things not supported by inline
 styles are supported with Glamor like pseudo-classes/-elements, `@media`
 queries, parent/child/contextual selectors, etc.

packages/gatsby-remark-prismjs/README.md

@@ -525,7 +525,7 @@ See the [client-side PrismJS implementation][8] for reference.
 [1]: https://github.com/PrismJS/prism/tree/8eb0ab6f76484ca47fa7acbf77657fab17b03ca7/plugins/line-highlight
 [2]: https://github.com/facebook/react/blob/00ba97a354e841701b4b83983c3a3904895e7b87/docs/_config.yml#L10
 [3]: http://prismjs.com/#plugins
-[4]: https://facebook.github.io/react/tutorial/tutorial.html
+[4]: https://reactjs.org/tutorial/tutorial.html
 [5]: https://github.com/PrismJS/prism/tree/1d5047df37aacc900f8270b1c6215028f6988eb1/themes
 [6]: http://prismjs.com/
 [7]: https://prismjs.com/plugins/line-numbers/