docs: Fix whitespace in the App manual stub
docs: Fix whitespace in the App manual stub

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