Add 4th extruder

Marlin/language_pt.h

 #define MSG_PREHEAT_PLA0                    " pre-aquecer PLA 1"
 #define MSG_PREHEAT_PLA1                    " pre-aquecer PLA 2"
 #define MSG_PREHEAT_PLA2                    " pre-aquecer PLA 3"
-#define MSG_PREHEAT_PLA012                  " pre-aq. PLA Tudo"
+#define MSG_PREHEAT_PLA3                    " pre-aquecer PLA 4"
+#define MSG_PREHEAT_PLA0123                 " pre-aq. PLA Tudo"
 #define MSG_PREHEAT_PLA_BEDONLY             " pre-aq. PLA \002Base"
 #define MSG_PREHEAT_PLA_SETTINGS            "PLA setting"
 #define MSG_PREHEAT_ABS                     "Pre-aquecer ABS"
 #define MSG_PREHEAT_ABS0                    " pre-aquecer ABS 1"
 #define MSG_PREHEAT_ABS1                    " pre-aquecer ABS 2"
 #define MSG_PREHEAT_ABS2                    " pre-aquecer ABS 3"
-#define MSG_PREHEAT_ABS012                  " pre-aq. ABS Tudo"
+#define MSG_PREHEAT_ABS3                    " pre-aquecer ABS 4"
+#define MSG_PREHEAT_ABS0123                 " pre-aq. ABS Tudo"
 #define MSG_PREHEAT_ABS_BEDONLY             " pre-aq. ABS \002Base"
 #define MSG_PREHEAT_ABS_SETTINGS            "ABS setting"
 #define MSG_COOLDOWN                        "Esfriar"