fix typo in test runner link #2193
                
     Merged
            
            
          
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User description
There was a typo in the link to the Test Runner section.
Description
The link is found in the Documentation > WebDriver > Getting Started > Using Selenium page, under the 'Common Uses' headline and 'Testing' subheadline.
Motivation and Context
Currently the link does not go to anywhere.
Types of changes
Checklist
PR Type
Documentation
Description
Fixed a typo in the Test Runner link.
Updated the anchor text to correctly reference
#test-runner.Changes walkthrough 📝
using_selenium.en.md
Fixed typo in Test Runner anchor linkwebsite_and_docs/content/documentation/webdriver/getting_started/using_selenium.en.md
#test-runnersto#test-runner.