Fix trailing whitespaces in docstrings
Fix trailing whitespaces in docstrings

lpsinger/astropy,saimn/astropy,lpsinger/astropy,saimn/astropy,pllim/astropy,lpsinger/astropy,astropy/astropy,larrybradley/astropy,mhvk/astropy,astropy/astropy,StuartLittlefair/astropy,lpsinger/astropy,mhvk/astropy,pllim/astropy,mhvk/astropy,pllim/astropy,saimn/astropy,pllim/astropy,larrybradley/astropy,StuartLittlefair/astropy,lpsinger/astropy,astropy/astropy,saimn/astropy,StuartLittlefair/astropy,mhvk/astropy,pllim/astropy,larrybradley/astropy,astropy/astropy,astropy/astropy,StuartLittlefair/astropy,larrybradley/astropy,larrybradley/astropy,StuartLittlefair/astropy,mhvk/astropy,saimn/astropy