Update Thetis entry for correct display in WSJT-X

NEWS

@@ -13,6 +13,7 @@ Version 5.x -- future
         * Change FT1000MP Mark V model names to align with FT1000MP
 
 Version 4.6
+        * Added Thetis entry -- derived from FlexRadio/Apache PowerSDR
         * Added VOICE/CW memory capability to many rigs -- thanks to David Balharrie M0DGB/G8FKH
         * Add -# --skip_init option to rigctl to skip rig initialization -- useful for executing commands quickly
         * rig_caps is no longer constant -- this may break some 3rd party relying on the "const" declaration.  Here's an example of how to handle compatiblity.

rigs/kenwood/flex6xxx.c

@@ -1524,8 +1524,8 @@ struct rig_caps powersdr_caps =
 struct rig_caps thetis_caps =
 {
     RIG_MODEL(RIG_MODEL_THETIS),
-    .model_name =   "Thetis",
-    .mfg_name =     "Apache",
+    .model_name =   "",
+    .mfg_name =     "Thetis",
     .version =      "20231222.0",
     .copyright =        "LGPL",
     .status =       RIG_STATUS_STABLE,