add source encoding rules to the docs. see #663
add source encoding rules to the docs. see #663

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