doc: drawtext options update

Remove nonexistant "draw" option.
Add undocumented "tc24hmax" timecode wrap option.
Signed-off-by: Mulvya <mulvya@gmail.com>
Signed-off-by: Lou Logan <lou@lrcd.com>

doc/filters.texi

@@ -6770,6 +6770,12 @@ Select how the @var{text} is expanded. Can be either @code{none},
 @code{normal} (default). See the @ref{drawtext_expansion, Text expansion} section
 below for details.
 
+@item basetime
+Set a start time for the count. Value is in microseconds. Only applied
+in the deprecated strftime expansion mode. To emulate in normal expansion
+mode use the @code{pts} function, supplying the start time (in seconds)
+as the second argument.
+
 @item fix_bounds
 If true, check and fix text coords to avoid clipping.
 
@@ -6791,9 +6797,6 @@ The font family to be used for drawing text. By default Sans.
 The font file to be used for drawing text. The path must be included.
 This parameter is mandatory if the fontconfig support is disabled.
 
-@item draw
-This option does not exist, please see the timeline system
-
 @item alpha
 Draw the text applying alpha blending. The value can
 be a number between 0.0 and 1.0.
@@ -6867,6 +6870,10 @@ option must be specified.
 @item timecode_rate, rate, r
 Set the timecode frame rate (timecode only).
 
+@item tc24hmax
+If set to 1, the output of the timecode option will wrap around at 24 hours.
+Default is 0 (disabled).
+
 @item text
 The text string to be drawn. The text must be a sequence of UTF-8
 encoded characters.