[TYPO3-doc] Mentioning Github in Feedback section of each manual

[François Suter]

Hi Michael,

Thanks for your suggestions. I have integrated them and merged a first 
patch for the TSconfig reference:

https://github.com/TYPO3-Documentation/TYPO3CMS-Reference-TSconfig/commit/5539b5a43060532ff8ab5a09c0f0fd01471bda5e

How does that look?

If no one opposes that change I'll proceed with spreading it to the 
other official manuals.

Cheers

-- 

Francois Suter

Work: Cobweb Development Sarl - http://www.cobweb.ch

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