Mention shims approach in an FAQ

[AlecRust]

While trying to figure out which "expose mise binaries" approach is best for my ~/.huskyrc file I noticed that in your What does mise activate do? FAQ, that the shims approach is preferable over the mise hook-env approach.

But in another FAQ mise isn't working when calling from tmux or another shell initialization script this is not mentioned and mise hook-env is suggested as the fix.

This PR updates the "mise isn't working when calling from tmux or another shell initialization script" FAQ to iron out this inconsistency, by mentioning the "add shims to path manually" approach since I think that is the recommended approach over mise hook-env (I assume it's faster too).

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bit more info jdx/mise#734

[jdx]

you are correct, my recommendation has shifted from writing this and it should be updated like this