doc/formats: Add documentation for 3 parameters that have been missing

Signed-off-by: Timothy Gu <timothygu99@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

doc/formats.texi

@@ -57,6 +57,9 @@ Enable RTP MP4A-LATM payload.
 Reduce the latency introduced by optional buffering
 @end table
 
+@item seek2any @var{integer} (@emph{input})
+Forces seeking to enable seek to any mode if set to 1. Default is 0.
+
 @item analyzeduration @var{integer} (@emph{input})
 Specify how many microseconds are analyzed to probe the input. A
 higher value will allow to detect more accurate information, but will
@@ -133,6 +136,12 @@ been without shifting.
 Also note that this affects only leading negative timestamps, and not
 non-monotonic negative timestamps.
 
+@item skip_initial_bytes @var{integer} (@emph{input})
+Set number initial bytes to skip. Default is 0.
+
+@item correct_ts_overflow @var{integer} (@emph{input})
+Correct single timestamp overflows if set to 1. Default is 1.
+
 @item flush_packets @var{integer} (@emph{output})
 Flush the underlying I/O stream after each packet. Default 1 enables it, and
 has the effect of reducing the latency; 0 disables it and may slightly