docs: Switch a 'Since' annotation in CallyActor
docs: Switch a 'Since' annotation in CallyActor

Since doesn't like it when it's not the last annotation.

djdeath/clutter,GNOME/clutter,dlespiau/clutter,djdeath/clutter,kerrickstaley/clutter-vala,djdeath/clutter-android,spatulasnout/clutter,collects/clutter,spatulasnout/clutter,kerrickstaley/clutter-vala,kerrickstaley/clutter-vala,spatulasnout/clutter,djdeath/clutter-multithreaded,nobled/clutter,djdeath/clutter,heysion/clutter-clone,jigpu/clutter,Distrotech/clutter,heysion/clutter-clone,Distrotech/clutter,jigpu/clutter,dlespiau/clutter,jigpu/clutter,collects/clutter,jigpu/clutter,GNOME/clutter,jigpu/clutter,heysion/clutter-clone,heysion/clutter-clone,djdeath/clutter,GNOME/clutter,Distrotech/clutter,ebassi/clutter,heysion/clutter-clone,djdeath/clutter-android,ebassi/clutter,djdeath/clutter,djdeath/clutter-android,GNOME/clutter,Distrotech/clutter,djdeath/clutter-multithreaded,Distrotech/clutter,djdeath/clutter-multithreaded,dlespiau/clutter,nobled/clutter,spatulasnout/clutter,ebassi/clutter,Distrotech/clutter,djdeath/clutter-android,spatulasnout/clutter,djdeath/clutter,djdeath/clutter-android,ebassi/clutter,kerrickstaley/clutter-vala,collects/clutter,jigpu/clutter,collects/clutter,collects/clutter,djdeath/clutter-multithreaded,nobled/clutter,GNOME/clutter,ebassi/clutter