docs: fix new line in the cogl xml top level document
docs: fix new line in the cogl xml top level document

A comma in the FSF address is wrong. Supreme Offence.

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