Add two firewall product mentions to FAQ

[villelaitila]

• No internet connectivity from WSL2/Ubuntu microsoft/WSL#4926 (comment)
• Curl failed by ping can succeeds on WSL2 microsoft/WSL#5382 (comment) (mine)

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This change is 

[opbld33]

Docs Build status updates of commit 38e3f84:

⚠️ Validation status: warnings

File	Status	Preview URL	Details
	⚠️Warning		Details
WSL/faq.yml	✅Succeeded	View

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[opbld33]

Docs Build status updates of commit 38e3f84:

✅ Validation status: passed

File	Status	Preview URL	Details
WSL/faq.yml	✅Succeeded	View

For more details, please refer to the build report.

Note: Broken links written as relative paths are included in the above build report. For broken links written as absolute paths or external URLs, see the broken link report.

For any questions, please:

• Try searching the docs.microsoft.com contributor guides
• Post your question in the Docs support channel

[mattwojo]

Thanks for the contribution @villelaitila. Sorry for the merge conflicts. We recently changed the file type for this faq so that it works better with the search engines. I committed your additions here:
0be3ad9
1d61167#diff-6278a1942c9aa115ac83bfa09fbedef165f74a6a790a3c331224d7eddbc2d7f1
Thanks again!