kdig: fix documented default EDNS bufsize

doc/man/kdig.1in

@@ -294,7 +294,7 @@ Library \fIlibnghttp2\fP is required.
 Request the nameserver identifier (NSID).
 .TP
 \fB+\fP[\fBno\fP]\fBbufsize\fP=\fIB\fP
-Set EDNS buffer size in bytes (default is 512 bytes).
+Set EDNS buffer size in bytes (default is 4096 bytes).
 .TP
 \fB+\fP[\fBno\fP]\fBpadding\fP[=\fIB\fP]
 Use EDNS(0) padding option to pad queries, optionally to a specific

doc/man_kdig.rst

@@ -273,7 +273,7 @@ Options
   Request the nameserver identifier (NSID).
 
 **+**\ [\ **no**\ ]\ **bufsize**\ =\ *B*
-  Set EDNS buffer size in bytes (default is 512 bytes).
+  Set EDNS buffer size in bytes (default is 4096 bytes).
 
 **+**\ [\ **no**\ ]\ **padding**\[\ =\ *B*\]
   Use EDNS(0) padding option to pad queries, optionally to a specific