Update docs to remove over escaping from example yaml warningTaskFilters

[ncook-hxgn]

Describe the context

• Extension: BuildQualityChecks
• Environment: using Azure DevOps Services (cloud)
• Agent type: self-hosted agent
  • Agent version: 2.213.2
• Pipeline type: yaml pipeline

Describe the problem and expected behavior
I copied the example value for warningTaskFilters from the yaml sample here
https://github.com/MicrosoftPremier/VstsExtensions/blob/master/BuildQualityChecks/en-US/overview.md#adding-the-task-to-a-yaml-build-definition

I reduced it down to a single displayName, but the regex failed.

Turns out I duplicated over-escaping from the example. After removing a \ from \\s, it worked.

Please update docs?

[ReneSchumacher]

Hey, thanks for pointing that out. I'll fix the docs right away.