More updates to manifest

Tassadar said that there should only be one recovery listed. I updated mine so that the app will detect it properly as a MultiROM recovery. He also answered some questions for me about the syntax in the file, so my updates reflect his feedback.
Merge branch 'patch-2' of https://github.com/CaptainThrowback/alexandru-g.github.io into CaptainThrowback-patch-2

Conflicts:
	files/android/m8/multirom/manifest.json