AP_RangeFinder: use typename SIM instead of SITL as it conflicts with namespace name

libraries/AP_RangeFinder/AP_RangeFinder.cpp

@@ -556,7 +556,7 @@ void RangeFinder::detect_instance(uint8_t instance, uint8_t& serial_instance)
         }
         break;
 
-    case Type::SITL:
+    case Type::SIM:
 #if CONFIG_HAL_BOARD == HAL_BOARD_SITL
         _add_backend(new AP_RangeFinder_SITL(state[instance], params[instance], instance), instance);
 #endif

libraries/AP_RangeFinder/AP_RangeFinder.h

@@ -88,7 +88,7 @@ public:
         GYUS42v2 = 31,
         MSP = 32,
         USD1_CAN = 33,
-        SITL = 100,
+        SIM = 100,
     };
 
     enum class Function {