pythongh-82180: Document support for non-integer arg removed from grp.getgrgid in 3.10 (pythonGH-95346)

Author: hugovk

Doc/library/grp.rst

@@ -45,9 +45,8 @@ It defines the following items:
    Return the group database entry for the given numeric group ID. :exc:`KeyError`
    is raised if the entry asked for cannot be found.
 
-   .. deprecated:: 3.6
-      Since Python 3.6 the support of non-integer arguments like floats or
-      strings in :func:`getgrgid` is deprecated.
+   .. versionchanged:: 3.10
+      :exc:`TypeError` is raised for non-integer arguments like floats or strings.
 
 .. function:: getgrnam(name)