cookbook: Proofing for "box layout" recipe
cookbook: Proofing for "box layout" recipe

General improvements to readability, formatting, fixing
typos etc.

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