add numbers to rig_errcode_e documentation

include/hamlib/rig.h

@@ -121,24 +121,24 @@ extern HAMLIB_EXPORT_VAR(const char *) hamlib_copyright2;
  * of rig_errcode_e definitions in case of error, or 0 when successful.
  */
 enum rig_errcode_e {
-    RIG_OK = 0,     /*!< No error, operation completed successfully */
-    RIG_EINVAL,     /*!< invalid parameter */
-    RIG_ECONF,      /*!< invalid configuration (serial,..) */
-    RIG_ENOMEM,     /*!< memory shortage */
-    RIG_ENIMPL,     /*!< function not implemented, but will be */
-    RIG_ETIMEOUT,   /*!< communication timed out */
-    RIG_EIO,        /*!< IO error, including open failed */
-    RIG_EINTERNAL,  /*!< Internal Hamlib error, huh! */
-    RIG_EPROTO,     /*!< Protocol error */
-    RIG_ERJCTED,    /*!< Command rejected by the rig */
-    RIG_ETRUNC,     /*!< Command performed, but arg truncated */
-    RIG_ENAVAIL,    /*!< function not available */
-    RIG_ENTARGET,   /*!< VFO not targetable */
-    RIG_BUSERROR,   /*!< Error talking on the bus */
-    RIG_BUSBUSY,    /*!< Collision on the bus */
-    RIG_EARG,       /*!< NULL RIG handle or any invalid pointer parameter in get arg */
-    RIG_EVFO,       /*!< Invalid VFO */
-    RIG_EDOM        /*!< Argument out of domain of func */
+    RIG_OK = 0,     /*!< 0 No error, operation completed successfully */
+    RIG_EINVAL,     /*!< 1 invalid parameter */
+    RIG_ECONF,      /*!< 2 invalid configuration (serial,..) */
+    RIG_ENOMEM,     /*!< 3 memory shortage */
+    RIG_ENIMPL,     /*!< 4 function not implemented, but will be */
+    RIG_ETIMEOUT,   /*!< 5 communication timed out */
+    RIG_EIO,        /*!< 6 IO error, including open failed */
+    RIG_EINTERNAL,  /*!< 7 Internal Hamlib error, huh! */
+    RIG_EPROTO,     /*!< 8 Protocol error */
+    RIG_ERJCTED,    /*!< 9 Command rejected by the rig */
+    RIG_ETRUNC,     /*!< 10 Command performed, but arg truncated */
+    RIG_ENAVAIL,    /*!< 11 Function not available */
+    RIG_ENTARGET,   /*!< 12 VFO not targetable */
+    RIG_BUSERROR,   /*!< 13 Error talking on the bus */
+    RIG_BUSBUSY,    /*!< 14 Collision on the bus */
+    RIG_EARG,       /*!< 15 NULL RIG handle or any invalid pointer parameter in get arg */
+    RIG_EVFO,       /*!< 16 Invalid VFO */
+    RIG_EDOM        /*!< 17 Argument out of domain of func */
 };
 
 /**