Fix typo in smie-rules-function documentation

Fix a typo in the documentation for the expected arguments when
calling smie-rules-function to set the indentation offset of
function arguments.

* doc/lispref/modes.texi (SMIE Indentation):
* lisp/emacs-lisp/smie.el (smie-rules-function): Fix typo in
documentation for smie-rules-function arguments.

1 files changed, 1 insertions, 1 deletions

diff --git a/doc/lispref/modes.texi b/doc/lispref/modes.texi
index 2214a30c170..13a8ec46a8a 100644
--- a/doc/lispref/modes.texi
+++ b/doc/lispref/modes.texi
@@ -5026,7 +5026,7 @@ should return the @var{offset} to use to indent @var{arg} itself.
 @item
 @code{:elem}, in which case the function should return either the offset
 to use to indent function arguments (if @var{arg} is the symbol
-@code{arg}) or the basic indentation step (if @var{arg} is the symbol
+@code{args}) or the basic indentation step (if @var{arg} is the symbol
 @code{basic}).
 @item
 @code{:list-intro}, in which case @var{arg} is a token and the function