Replace jsdom-global with global-jsdom (testing-library#760)

Author: just-boris

docs/react-testing-library/setup.mdx

@@ -294,19 +294,19 @@ configuration with Jest).
 `jsdom` is a pure JavaScript implementation of the DOM and browser APIs that
 runs in Node. If you're not using Jest and you would like to run your tests in
 Node, then you must install jsdom yourself. There's also a package called
-`jsdom-global` which can be used to setup the global environment to simulate the
+`global-jsdom` which can be used to setup the global environment to simulate the
 browser APIs.
 
-First, install `jsdom` and `jsdom-global`.
+First, install `jsdom` and `global-jsdom`.
 
 ```
-npm install --save-dev jsdom jsdom-global
+npm install --save-dev jsdom global-jsdom
 ```
 
 With mocha, the test command would look something like this:
 
 ```
-mocha --require jsdom-global/register
+mocha --require global-jsdom/register
 ```
 
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