Change write_delay in FTDX3000 to 10ms

VS1;VS; was answering VS0 instead of VS1 even though VFO did change to VFOB
https://github.com/Hamlib/Hamlib/issues/906

rigs/yaesu/ft3000.c

@@ -259,7 +259,9 @@ const struct rig_caps ftdx3000_caps =
     .serial_stop_bits =   2,            /* Assumed since manual makes no mention */
     .serial_parity =      RIG_PARITY_NONE,
     .serial_handshake =   RIG_HANDSHAKE_HARDWARE,
-    .write_delay =        FTDX5000_WRITE_DELAY,
+    // write_delay 5ms or less was causing VS1;VS; to answer with VS0 instead of VS1 even though change did occur
+    // see https://github.com/Hamlib/Hamlib/issues/906
+    .write_delay =        10, 
     .post_write_delay =   FTDX5000_POST_WRITE_DELAY,
     .timeout =            2000,
     .retry =              3,