Rover: Change abbreviations

Rover/Parameters.cpp

@@ -160,7 +160,7 @@ const AP_Param::Info Rover::var_info[] = {
     // @Description: Controls the action that will be taken when an EKF failsafe is invoked
     // @Values: 0:Disabled,1:Hold,2:ReportOnly
     // @User: Advanced
-    GSCALAR(fs_ekf_action, "FS_EKF_ACTION", FS_EFK_HOLD),
+    GSCALAR(fs_ekf_action, "FS_EKF_ACTION", FS_EKF_HOLD),
 
     // @Param: FS_EKF_THRESH
     // @DisplayName: EKF failsafe variance threshold

Rover/defines.h

@@ -85,8 +85,8 @@ enum fs_crash_action {
 
 enum fs_ekf_action {
     FS_EKF_DISABLE = 0,
-    FS_EFK_HOLD = 1,
-    FS_EFK_REPORT_ONLY = 2,
+    FS_EKF_HOLD = 1,
+    FS_EKF_REPORT_ONLY = 2,
 };
 
 #define DISTANCE_HOME_MINCHANGE 0.5f  // minimum distance to adjust home location

Rover/ekf_check.cpp

@@ -163,9 +163,9 @@ void Rover::failsafe_ekf_event()
         case FS_EKF_DISABLE:
             // do nothing
             return;
-        case FS_EFK_REPORT_ONLY:
+        case FS_EKF_REPORT_ONLY:
             break;
-        case FS_EFK_HOLD:
+        case FS_EKF_HOLD:
         default:
             set_mode(mode_hold, ModeReason::EKF_FAILSAFE);
             break;