Fix problems in docstrings
Fix problems in docstrings

aleksandr-bakanov/astropy,astropy/astropy,lpsinger/astropy,mhvk/astropy,dhomeier/astropy,pllim/astropy,StuartLittlefair/astropy,saimn/astropy,stargaser/astropy,lpsinger/astropy,dhomeier/astropy,lpsinger/astropy,dhomeier/astropy,StuartLittlefair/astropy,stargaser/astropy,aleksandr-bakanov/astropy,saimn/astropy,StuartLittlefair/astropy,larrybradley/astropy,pllim/astropy,astropy/astropy,stargaser/astropy,mhvk/astropy,MSeifert04/astropy,bsipocz/astropy,StuartLittlefair/astropy,MSeifert04/astropy,MSeifert04/astropy,stargaser/astropy,saimn/astropy,pllim/astropy,larrybradley/astropy,StuartLittlefair/astropy,lpsinger/astropy,mhvk/astropy,pllim/astropy,dhomeier/astropy,bsipocz/astropy,saimn/astropy,dhomeier/astropy,bsipocz/astropy,lpsinger/astropy,mhvk/astropy,pllim/astropy,larrybradley/astropy,MSeifert04/astropy,astropy/astropy,mhvk/astropy,astropy/astropy,bsipocz/astropy,aleksandr-bakanov/astropy,astropy/astropy,larrybradley/astropy,aleksandr-bakanov/astropy,saimn/astropy,larrybradley/astropy