Formatting fixes for physical types docs
Formatting fixes for physical types docs

StuartLittlefair/astropy,aleksandr-bakanov/astropy,astropy/astropy,larrybradley/astropy,saimn/astropy,StuartLittlefair/astropy,pllim/astropy,lpsinger/astropy,pllim/astropy,saimn/astropy,saimn/astropy,lpsinger/astropy,aleksandr-bakanov/astropy,StuartLittlefair/astropy,lpsinger/astropy,lpsinger/astropy,mhvk/astropy,mhvk/astropy,larrybradley/astropy,StuartLittlefair/astropy,StuartLittlefair/astropy,larrybradley/astropy,astropy/astropy,aleksandr-bakanov/astropy,mhvk/astropy,larrybradley/astropy,larrybradley/astropy,pllim/astropy,aleksandr-bakanov/astropy,pllim/astropy,mhvk/astropy,astropy/astropy,saimn/astropy,astropy/astropy,lpsinger/astropy,mhvk/astropy,astropy/astropy,saimn/astropy,pllim/astropy