Added \dump_caps as tested

git-svn-id: https://hamlib.svn.sourceforge.net/svnroot/hamlib/trunk@2822 7ae35d74-ebe9-4afe-98af-79ac388436b8

tests/rigctld.8

@@ -481,6 +481,8 @@ The following commands have been tested with the Block protocol and the included
 \fI\\set_mode\fP    \fI\\get_mode\fP
 .br
 \fI\\set_vfo\fP     \fI\\get_vfo\fP
+.br
+\fI\\dump_caps\fP
 .SH EXAMPLES
 Start \fBrigctld\fP for a Yaesu FT-920 using an USB-to-serial adapter and
 backgrounding: