Update Doc/library/os.rst

Co-authored-by: Adam Turner <[email protected]>

Author: calestyo

Doc/library/os.rst

@@ -2121,9 +2121,7 @@ features:
 
    .. audit-event:: os.chmod path,mode,dir_fd os.lchmod
 
-   .. availability:: Unix, if changing the mode of symbolic links is \
-                     supported (for example on NetBSD since 1.3 or FreeBSD \
-                     since 3.0, but not on Linux or OpenBSD).
+   .. availability:: Unix, not Linux, FreeBSD >= 1.3, NetBSD >= 1.3, not OpenBSD
 
    .. versionchanged:: 3.6
       Accepts a :term:`path-like object`.