Some function doc tweaks (#1961)
Some function doc tweaks (#1961)

* Add docs for the inline function attribute

* Remove outdated comment

Seems like a leftover from when implicit returns were around.

* Consistent terminology

raulgrell/zig,zig-lang/zig,raulgrell/zig,zig-lang/zig,raulgrell/zig,zig-lang/zig,andrewrk/zig,raulgrell/zig,raulgrell/zig,andrewrk/zig