blur is now available in browser

[get-itips]

closes https://github.com/MicrosoftDocs/OfficeDocs-SkypeForBusiness/issues/9382

also corrected that superscript 4 becomes 3

@dstrome please review

[opbld33]

Learn Build status updates of commit 6618580:

:white_check_mark: Validation status: passed

File	Status	Preview URL	Details
Teams/includes/browser-support.md	:white_check_mark:Succeeded

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.

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[scanum]

@dstrome PR has been copyedited and is ready for final review, could you please check and merge? Thanks!

[get-itips]

@dstrome please review/merge thanks

[get-itips]

@tiburd can you help me getting this reviewed?