Removed duplicated waf tags

[michalsadowski]

Remove duplicated waf tags written in small letters to mach other files where waf tags are written with first letter in capital

Description

Remove duplicated waf tags written in small letters to mach other files where waf tags are written with first letter in capital

Checklist

• [x ] I've tested my changes to ensure they are ready for review.
• [ x] I've read the CONTRIBUTING.md guide.
• [ x] I've updated the documentation (if applicable).
• Resource Graph queries have been included (and tested) for recommendations where ever possible¹.
• [ x] Resource Graph queries have NOT been included (please explain below).

Cleaned file for easier reporting

Footnotes

1. Details on how to add Azure Resource Graph queries to recommendations can be found here. ↩