Documentation typo in `Lua API.rst`

[realSquidCoder]

https://github.com/DFHack/dfhack/blob/d295136ab1ff24dd249698b272d4090466fb1af4/docs/dev/Lua%20API.rst?plain=1#L6139

I believe it's meant to say call updateLayout, not "all" updateLayout. This typo made me misinterpret how i was supposed to use it.

Note: I'd make a PR myself, but im away from my PC atm