Documentation: Fix typos

Fix typos in Documentation.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://lore.kernel.org/r/20230814212822.193684-4-helgaas@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Documentation/sphinx/cdomain.py

@@ -178,7 +178,7 @@ class CObject(Base_CObject):
         if len(arglist[0].split(" ")) > 1:
             return False
 
-        # This is a function-like macro, it's arguments are typeless!
+        # This is a function-like macro, its arguments are typeless!
         signode  += addnodes.desc_name(fullname, fullname)
         paramlist = addnodes.desc_parameterlist()
         signode  += paramlist