feat(testplane-docs): add docs for @testplane/testing-library

Author: rocketraccoon

docs/guides/how-to-add-testing-library.mdx

@@ -8,17 +8,17 @@
 
 To be able to use [queries][queries] from `testing-library` in Testplane tests, you only need to follow a few steps.
 
-1. Install the npm package `'@testing-library/webdriverio'`
+1. Install the npm package `@testplane/testing-library` (our adapter package for the original testing-library)
 
 ```bash
-npm i -D @testing-library/webdriverio
+npm i -D @testplane/testing-library
 ```
 
 2. Include it in the Testplane config in the `prepareBrowser` section:
 
 ```javascript
 // .testplane.conf.js
-const { setupBrowser } = require("@testing-library/webdriverio");
+const { setupBrowser } = require("@testplane/testing-library");
 
 module.exports = {
     prepareBrowser(browser) {