Fix dirs typo in Vala docs [skip ci]
Fix dirs typo in Vala docs [skip ci]

Co-authored-by: wb9688 <6c8665f31d80c1a2f1a3b48fecdd021da52d3999@users.noreply.github.com>
jpakkane/meson,pexip/meson,mesonbuild/meson,mesonbuild/meson,mesonbuild/meson,pexip/meson,mesonbuild/meson,pexip/meson,pexip/meson,jpakkane/meson,mesonbuild/meson,jpakkane/meson,jpakkane/meson,jpakkane/meson,mesonbuild/meson,QuLogic/meson,mesonbuild/meson,QuLogic/meson,pexip/meson,jpakkane/meson,QuLogic/meson,pexip/meson,pexip/meson,QuLogic/meson,QuLogic/meson,QuLogic/meson,pexip/meson,QuLogic/meson,pexip/meson,mesonbuild/meson,jpakkane/meson,pexip/meson,mesonbuild/meson,jpakkane/meson,QuLogic/meson,QuLogic/meson,jpakkane/meson,mesonbuild/meson