pkgconfig: Fix typo in 'Libs.private'
pkgconfig: Fix typo in 'Libs.private'

It's no different from 'Libs', so we specify as well the directory.

rhd/meson,trhd/meson,fmuellner/meson,ernestask/meson,wberrier/meson,ernestask/meson,jeandet/meson,jpakkane/meson,MathieuDuponchelle/meson,ernestask/meson,centricular/meson,trhd/meson,jeandet/meson,jpakkane/meson,wberrier/meson,thiblahute/meson,thiblahute/meson,QuLogic/meson,QuLogic/meson,becm/meson,pexip/meson,ernestask/meson,centricular/meson,QuLogic/meson,QuLogic/meson,becm/meson,pexip/meson,QuLogic/meson,pexip/meson,fmuellner/meson,becm/meson,aaronp24/meson,aaronp24/meson,fmuellner/meson,jeandet/meson,wberrier/meson,ernestask/meson,centricular/meson,pexip/meson,centricular/meson,thiblahute/meson,centricular/meson,fmuellner/meson,jeandet/meson,becm/meson,becm/meson,jpakkane/meson,ernestask/meson,wberrier/meson,thiblahute/meson,thiblahute/meson,fmuellner/meson,mesonbuild/meson,fmuellner/meson,pexip/meson,jeandet/meson,QuLogic/meson,rhd/meson,MathieuDuponchelle/meson,becm/meson,pexip/meson,centricular/meson,MathieuDuponchelle/meson,becm/meson,jeandet/meson,trhd/meson,MathieuDuponchelle/meson,rhd/meson,trhd/meson,mesonbuild/meson,wberrier/meson,aaronp24/meson,fmuellner/meson,thiblahute/meson,jpakkane/meson,wberrier/meson,jpakkane/meson,rhd/meson,mesonbuild/meson,wberrier/meson,MathieuDuponchelle/meson,fmuellner/meson,jeandet/meson,jpakkane/meson,pexip/meson,pexip/meson,jeandet/meson,wberrier/meson,aaronp24/meson,jeandet/meson,mesonbuild/meson,rhd/meson,QuLogic/meson,jpakkane/meson,QuLogic/meson,ernestask/meson,aaronp24/meson,centricular/meson,QuLogic/meson,pexip/meson,MathieuDuponchelle/meson,ernestask/meson,trhd/meson,fmuellner/meson,trhd/meson,aaronp24/meson,thiblahute/meson,jpakkane/meson,rhd/meson,MathieuDuponchelle/meson,mesonbuild/meson,aaronp24/meson,aaronp24/meson,becm/meson,pexip/meson,thiblahute/meson,becm/meson,becm/meson,trhd/meson,rhd/meson,trhd/meson,mesonbuild/meson,ernestask/meson,MathieuDuponchelle/meson,mesonbuild/meson,jpakkane/meson,mesonbuild/meson,centricular/meson,mesonbuild/meson,thiblahute/meson,mesonbuild/meson,MathieuDuponchelle/meson,rhd/meson,aaronp24/meson,trhd/meson