fix error in M105 output -- use SERIAL_PROTOCOL for ints instead of SERIAL_PROTOCOL_F (#6584)

also removed wayward 'address of' ampersand in setTargetHotend and setTargetBed parameters

Marlin/Marlin_main.cpp

   void print_heaterstates() {
     #if HAS_TEMP_HOTEND
       SERIAL_PROTOCOLPGM(" T:");
-      SERIAL_PROTOCOL_F(thermalManager.degHotend(target_extruder), 1);
+      SERIAL_PROTOCOL(thermalManager.degHotend(target_extruder));
       SERIAL_PROTOCOLPGM(" /");
-      SERIAL_PROTOCOL_F(thermalManager.degTargetHotend(target_extruder), 1);
+      SERIAL_PROTOCOL(thermalManager.degTargetHotend(target_extruder));
       #if ENABLED(SHOW_TEMP_ADC_VALUES)
         SERIAL_PROTOCOLPAIR(" (", thermalManager.rawHotendTemp(target_extruder) / OVERSAMPLENR);
         SERIAL_PROTOCOLCHAR(')');
     #endif
     #if HAS_TEMP_BED
       SERIAL_PROTOCOLPGM(" B:");
-      SERIAL_PROTOCOL_F(thermalManager.degBed(), 1);
+      SERIAL_PROTOCOL(thermalManager.degBed());
       SERIAL_PROTOCOLPGM(" /");
-      SERIAL_PROTOCOL_F(thermalManager.degTargetBed(), 1);
+      SERIAL_PROTOCOL(thermalManager.degTargetBed());
       #if ENABLED(SHOW_TEMP_ADC_VALUES)
         SERIAL_PROTOCOLPAIR(" (", thermalManager.rawBedTemp() / OVERSAMPLENR);
         SERIAL_PROTOCOLCHAR(')');
       HOTEND_LOOP() {
         SERIAL_PROTOCOLPAIR(" T", e);
         SERIAL_PROTOCOLCHAR(':');
-        SERIAL_PROTOCOL_F(thermalManager.degHotend(e), 1);
+        SERIAL_PROTOCOL(thermalManager.degHotend(e));
         SERIAL_PROTOCOLPGM(" /");
-        SERIAL_PROTOCOL_F(thermalManager.degTargetHotend(e), 1);
+        SERIAL_PROTOCOL(thermalManager.degTargetHotend(e));
         #if ENABLED(SHOW_TEMP_ADC_VALUES)
           SERIAL_PROTOCOLPAIR(" (", thermalManager.rawHotendTemp(e) / OVERSAMPLENR);
           SERIAL_PROTOCOLCHAR(')');

Marlin/temperature.h

       #endif
       return target_temperature[HOTEND_INDEX];
     }
+
     static int16_t degTargetBed() { return target_temperature_bed; }
 
     #if WATCH_HOTENDS
       static void start_watching_bed();
     #endif
 
-    static void setTargetHotend(const int16_t &celsius, uint8_t e) {
+    static void setTargetHotend(const int16_t celsius, uint8_t e) {
       #if HOTENDS == 1
         UNUSED(e);
       #endif
       #endif
     }
 
-    static void setTargetBed(const int16_t &celsius) {
+    static void setTargetBed(const int16_t celsius) {
       target_temperature_bed = celsius;
       #if WATCH_THE_BED
         start_watching_bed();