Fix typo in maintainer_workflow.rst link [skip ci]
Fix typo in maintainer_workflow.rst link [skip ci]

Co-authored-by: P. L. Lim <01b0ff1ff6bf52826e8c867754553ed4806180a6@users.noreply.github.com>
pllim/astropy,StuartLittlefair/astropy,aleksandr-bakanov/astropy,astropy/astropy,aleksandr-bakanov/astropy,saimn/astropy,lpsinger/astropy,lpsinger/astropy,astropy/astropy,StuartLittlefair/astropy,pllim/astropy,larrybradley/astropy,astropy/astropy,StuartLittlefair/astropy,mhvk/astropy,lpsinger/astropy,larrybradley/astropy,pllim/astropy,saimn/astropy,astropy/astropy,pllim/astropy,astropy/astropy,aleksandr-bakanov/astropy,StuartLittlefair/astropy,mhvk/astropy,lpsinger/astropy,larrybradley/astropy,pllim/astropy,larrybradley/astropy,mhvk/astropy,mhvk/astropy,StuartLittlefair/astropy,saimn/astropy,mhvk/astropy,aleksandr-bakanov/astropy,larrybradley/astropy,saimn/astropy,lpsinger/astropy,saimn/astropy