Document time-convert FORM argument as mandatory

This is a followup to commit b70369c557 of 2022-08-05
"time-convert): Deprecate calls without an explicit FORM arg".

* doc/lispref/os.texi (Time Conversion):
* src/timefns.c (Ftime_convert): Describe FORM argument as required
as per the advertised calling convention.

1 files changed, 2 insertions, 3 deletions

diff --git a/src/timefns.c b/src/timefns.c
index 8b1e729d4f4..7db50ea81cc 100644
--- a/src/timefns.c
+++ b/src/timefns.c
@@ -1714,11 +1714,10 @@ usage: (encode-time TIME &rest OBSOLESCENT-ARGUMENTS)  */)
 }
 
 DEFUN ("time-convert", Ftime_convert, Stime_convert, 1, 2, 0,
-       doc: /* Convert TIME value to a Lisp timestamp.
-With optional FORM, convert to that timestamp form.
+       doc: /* Convert TIME value to a Lisp timestamp of the given FORM.
 Truncate the returned value toward minus infinity.
 
-If FORM is nil (the default), return the same form as `current-time'.
+If FORM is nil, return the same form as `current-time'.
 
 If FORM is a positive integer, return a pair of integers (TICKS . FORM),
 where TICKS is the number of clock ticks and FORM is the clock frequency