docs: correct the documentation for sizing elements in a fa-header-footer-layout
docs: correct the documentation for sizing elements in a fa-header-footer-layout

Fixes #196

Merge branch 'patch-6' of github.com:bguiz/famous-angular into bguiz-patch-6

03128crz/famous-angular,03128crz/famous-angular,stonegithubs/famous-angular,itdoesnmakesense/famous-angular,Famous/famous-angular,nishant8BITS/famous-angular,nishant8BITS/famous-angular,cloud-envy/famous-angular,juan-rod/famous-angular,itdoesnmakesense/famous-angular,SuPenguin/famous-angular,nishant8BITS/famous-angular,cloud-envy/famous-angular,stonegithubs/famous-angular,stonegithubs/famous-angular,Famous/famous-angular,juan-rod/famous-angular,cloud-envy/famous-angular,SuPenguin/famous-angular,SuPenguin/famous-angular,juan-rod/famous-angular,Famous/famous-angular,itdoesnmakesense/famous-angular