(Fmake_local_variable): Doc fix.

src/data.c

@@ -1494,7 +1494,7 @@ This function returns VARIABLE, and therefore
 works.
 
 Do not use `make-local-variable' to make a hook variable buffer-local.
-Use `make-local-hook' instead.  */)
+Instead, use `add-hook' and specify t for the LOCAL argument.  */)
      (variable)
      register Lisp_Object variable;
 {