vim-patch:0a336cc: runtime(doc): clarify that a umask is applied to mkdir() (#32845)

fixes: vim/vim#16849

0a336ccb57

Co-authored-by: Christian Brabandt <cb@256bit.org>

src/nvim/eval.lua

@@ -7550,10 +7550,9 @@ M.funcs = {
       If {prot} is given it is used to set the protection bits of
       the new directory.  The default is 0o755 (rwxr-xr-x: r/w for
       the user, readable for others).  Use 0o700 to make it
-      unreadable for others.
-
-      {prot} is applied for all parts of {name}.  Thus if you create
-      /tmp/foo/bar then /tmp/foo will be created with 0o700. Example: >vim
+      unreadable for others.  This is used for the newly created
+      directories.  Note an umask is applied to {prot} (on Unix).
+      Example: >vim
       	call mkdir($HOME .. "/tmp/foo/bar", "p", 0o700)
 
       <This function is not available in the |sandbox|.