docs: Fix the link to set_content_gravity()
docs: Fix the link to set_content_gravity()

Distrotech/clutter,jigpu/clutter,djdeath/clutter-android,djdeath/clutter-android,collects/clutter,Distrotech/clutter,collects/clutter,djdeath/clutter,djdeath/clutter-android,djdeath/clutter,djdeath/clutter,collects/clutter,GNOME/clutter,jigpu/clutter,heysion/clutter-clone,ebassi/clutter,ebassi/clutter,ebassi/clutter,heysion/clutter-clone,jigpu/clutter,Distrotech/clutter,collects/clutter,GNOME/clutter,Distrotech/clutter,djdeath/clutter,heysion/clutter-clone,jigpu/clutter,GNOME/clutter,GNOME/clutter,jigpu/clutter,ebassi/clutter,djdeath/clutter-android,heysion/clutter-clone,jigpu/clutter,collects/clutter,Distrotech/clutter,GNOME/clutter,heysion/clutter-clone,djdeath/clutter,djdeath/clutter-android,ebassi/clutter,djdeath/clutter,Distrotech/clutter