Update Kernel mode docstrings
Update Kernel mode docstrings

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