WASDK 1.7.7 Release Notes (#6174)

* Release Notes

* Update downloads-archive.md

* Update downloads-archive.md

* Update downloads-archive.md

* Update downloads-archive.md

* Update windows-app-sdk-1-7.md

* Test of link fixes

* Update release notes link for version 1.7.7

* Fix release notes link for version 1.7.7

Updated the link for release notes in the Windows App SDK 1.7.7 entry.

* 1.7 link fix test (#6177)

* 1.7 link fix test

* link fixes confirmed

---------

Co-authored-by: KB <[email protected]>
Co-authored-by: agniuks <[email protected]>

Author: 3 people