Revert "Changed the document title of units/format.rst"
Revert "Changed the document title of units/format.rst"

This reverts commit dff86f70e04c8c4e588df11a4086b74f6338b8f2.

lpsinger/astropy,saimn/astropy,aleksandr-bakanov/astropy,bsipocz/astropy,bsipocz/astropy,astropy/astropy,DougBurke/astropy,aleksandr-bakanov/astropy,stargaser/astropy,astropy/astropy,joergdietrich/astropy,StuartLittlefair/astropy,AustereCuriosity/astropy,DougBurke/astropy,stargaser/astropy,kelle/astropy,mhvk/astropy,joergdietrich/astropy,larrybradley/astropy,funbaker/astropy,StuartLittlefair/astropy,astropy/astropy,AustereCuriosity/astropy,tbabej/astropy,StuartLittlefair/astropy,kelle/astropy,AustereCuriosity/astropy,saimn/astropy,AustereCuriosity/astropy,bsipocz/astropy,kelle/astropy,astropy/astropy,dhomeier/astropy,mhvk/astropy,pllim/astropy,StuartLittlefair/astropy,aleksandr-bakanov/astropy,DougBurke/astropy,lpsinger/astropy,saimn/astropy,dhomeier/astropy,larrybradley/astropy,kelle/astropy,lpsinger/astropy,tbabej/astropy,funbaker/astropy,astropy/astropy,saimn/astropy,joergdietrich/astropy,DougBurke/astropy,aleksandr-bakanov/astropy,MSeifert04/astropy,funbaker/astropy,bsipocz/astropy,dhomeier/astropy,pllim/astropy,funbaker/astropy,pllim/astropy,kelle/astropy,saimn/astropy,larrybradley/astropy,mhvk/astropy,dhomeier/astropy,pllim/astropy,dhomeier/astropy,tbabej/astropy,pllim/astropy,mhvk/astropy,StuartLittlefair/astropy,stargaser/astropy,joergdietrich/astropy,joergdietrich/astropy,larrybradley/astropy,lpsinger/astropy,AustereCuriosity/astropy,MSeifert04/astropy,MSeifert04/astropy,larrybradley/astropy,lpsinger/astropy,MSeifert04/astropy,stargaser/astropy,tbabej/astropy,tbabej/astropy,mhvk/astropy