Improve treesit-node-child-by-field-name docstring

* src/treesit.c (Ftreesit_node_child_by_field_name): Improve docstring.

(cherry picked from commit c66bda1a19afd7d8391765e2ed207e44107d8a50)

diff --git a/src/treesit.c b/src/treesit.c
index 722f2a9360d241a2d9ee8c1d0b70b5fcfbc44a7d..baa1b8dfd1194f8d029284c77cd9932bed041ffe 100644 (file)
--- a/src/treesit.c
+++ b/src/treesit.c
@@ -2146,7 +2146,7 @@ nil.  If NODE is nil, return nil.  */)
 DEFUN ("treesit-node-child-by-field-name",
        Ftreesit_node_child_by_field_name,
        Streesit_node_child_by_field_name, 2, 2, 0,
-       doc: /* Return the child of NODE with FIELD-NAME.
+       doc: /* Return the child of NODE with FIELD-NAME (a string).
 Return nil if there is no such child.  If NODE is nil, return nil.  */)
   (Lisp_Object node, Lisp_Object field_name)
 {