docs: address review comments

Author: namiroues

package/MDAnalysis/coordinates/GRO.py

@@ -96,7 +96,7 @@
 
 
 .. _Gromacs: http://www.gromacs.org
-.. _GRO: https://manual.gromacs.org/2024.0/reference-manual/file-formats.html#gro
+.. _GRO: https://manual.gromacs.org/2024.4/reference-manual/file-formats.html#gro
 .. _GRO format: http://chembytes.wikidot.com/g-grofile
 
 """