Mi-24P Checklist

I made these checklists after being inspired by the minsky format, using the Cold War Air Museum Mi-24's checklist and the always great chuck's guide.

Changelog:

1.1 - fixes in the before taxi
        added the hovering takeoff section
1.2 - fixes in the before taxi
1.3 - fixes in the petrovich section
1.4 - fixed typos