Merge pull request #1571 from AnHardt/Undubble

Undubble MSG_MIN & MSG MAX

Marlin/language.h

 #define MSG_PID_TIMEOUT                     MSG_PID_AUTOTUNE_FAILED " timeout"
 #define MSG_BIAS                            " bias: "
 #define MSG_D                               " d: "
-#define MSG_MIN                             " min: "
-#define MSG_MAX                             " max: "
+#define MSG_T_MIN                           " min: "
+#define MSG_T_MAX                           " max: "
 #define MSG_KU                              " Ku: "
 #define MSG_TU                              " Tu: "
 #define MSG_CLASSIC_PID                     " Classic PID "

Marlin/temperature.cpp

 
             SERIAL_PROTOCOLPGM(MSG_BIAS); SERIAL_PROTOCOL(bias);
             SERIAL_PROTOCOLPGM(MSG_D);    SERIAL_PROTOCOL(d);
-            SERIAL_PROTOCOLPGM(MSG_MIN);  SERIAL_PROTOCOL(min);
-            SERIAL_PROTOCOLPGM(MSG_MAX);  SERIAL_PROTOCOLLN(max);
+            SERIAL_PROTOCOLPGM(MSG_T_MIN);  SERIAL_PROTOCOL(min);
+            SERIAL_PROTOCOLPGM(MSG_T_MAX);  SERIAL_PROTOCOLLN(max);
             if (cycles > 2) {
               Ku = (4.0 * d) / (3.14159265 * (max - min) / 2.0);
               Tu = ((float)(t_low + t_high) / 1000.0);