README & config file update for pr #1751

[JustCryen]

As discussed in #1751
I'm open to suggestions about description phrasing in the README

[JustCryen]

@ChrisLane @flightlessmango
It's been a while, I'm not sure if you have seen this PR.
It is linked to the previous one but maybe you haven't got a notification for it.

[ChrisLane]

I hadn't seen this but the changes look sensible.

A couple of minor points to consider for potential improvements:

1. FPS superscript still appears for FPS stats in the fps_metrics component.
2. hide_engine_names does not override engine_short_names so if the latter appears in config, the former will not take effect.

[JustCryen]

I have noticed the second behavior but I wasn't sure how this should be handled.
This being said, I will correct this shortly.

[flightlessmango]

hide_engine_names does not override engine_short_names so if the latter appears in config, the former will not take effect.

This has been reworked a bit in e96a0bf
Might have accidentally fixed it?

[ChrisLane]

hide_engine_names does not override engine_short_names so if the latter appears in config, the former will not take effect.

This has been reworked a bit in e96a0bf Might have accidentally fixed it?

Still reproducible as of mangohud-git @ 5399bf1