docs: recommend add_project_arguments instead of add_global_arguments [skip ci]
docs: recommend add_project_arguments instead of add_global_arguments [skip ci]

As autotools doesn't have anything like wraps so it doesn't need to
differentiate, but meson does so it should.

mesonbuild/meson,becm/meson,jpakkane/meson,QuLogic/meson,jpakkane/meson,jpakkane/meson,mesonbuild/meson,QuLogic/meson,mesonbuild/meson,pexip/meson,pexip/meson,pexip/meson,jpakkane/meson,pexip/meson,mesonbuild/meson,becm/meson,mesonbuild/meson,pexip/meson,QuLogic/meson,becm/meson,QuLogic/meson,jpakkane/meson,mesonbuild/meson,pexip/meson,becm/meson,pexip/meson,QuLogic/meson,pexip/meson,QuLogic/meson,mesonbuild/meson,becm/meson,QuLogic/meson,becm/meson,mesonbuild/meson,jpakkane/meson,becm/meson,pexip/meson,becm/meson,jpakkane/meson,becm/meson,jpakkane/meson,pexip/meson,QuLogic/meson,jpakkane/meson,QuLogic/meson,becm/meson,mesonbuild/meson,mesonbuild/meson