Update language_de.h

Grammar corrections

Marlin/language_de.h

 #define MSG_BABYSTEP_X                      "Babystep X"
 #define MSG_BABYSTEP_Y                      "Babystep Y"
 #define MSG_BABYSTEP_Z                      "Babystep Z"
-#define MSG_ENDSTOP_ABORT                   "Endstop-Abbr. ein"
+#define MSG_ENDSTOP_ABORT                   "Endstopp-Abbr. ein"
 #define MSG_HEATING_FAILED_LCD              "HEIZEN FEHLGESCHLAGEN"
 #define MSG_ERR_REDUNDANT_TEMP              "REDUND. TEMPERATURABWEICHUNG"
 #define MSG_THERMAL_RUNAWAY                 LCD_STR_THERMOMETER " NICHT ERREICHT"
 
 #define MSG_INFO_MENU                       "Über den Drucker"
 #define MSG_INFO_PRINTER_MENU               "Drucker Info"
-#define MSG_INFO_STATS_MENU                 "Drucker Stats"
+#define MSG_INFO_STATS_MENU                 "Drucker Stat."
 #define MSG_INFO_BOARD_MENU                 "Board Info"
 #define MSG_INFO_THERMISTOR_MENU            "Thermistors"
 #define MSG_INFO_EXTRUDERS                  "Extruders"
 #define MSG_INFO_BAUDRATE                   "Baud"
-#define MSG_INFO_PROTOCOL                   "Protokol"
+#define MSG_INFO_PROTOCOL                   "Protokoll"
 #define MSG_LIGHTS_ON                       "Gehäuse Licht an"
 #define MSG_LIGHTS_OFF                      "Gehäuse Licht aus"
 
   #define MSG_FILAMENT_CHANGE_INIT_1          "Warte auf den"
   #define MSG_FILAMENT_CHANGE_INIT_2          "Start des "
   #define MSG_FILAMENT_CHANGE_INIT_3          "Filamentwechsels"
-  #define MSG_FILAMENT_CHANGE_UNLOAD_1        "Warte auf das"
-  #define MSG_FILAMENT_CHANGE_UNLOAD_2        "Herausnehmen"
+  #define MSG_FILAMENT_CHANGE_UNLOAD_1        "Warte auf"
+  #define MSG_FILAMENT_CHANGE_UNLOAD_2        "Herausnahme"
   #define MSG_FILAMENT_CHANGE_UNLOAD_3        "des Filaments"
-  #define MSG_FILAMENT_CHANGE_INSERT_1        "Fädle Filament"
-  #define MSG_FILAMENT_CHANGE_INSERT_2        "ein und drücke"
-  #define MSG_FILAMENT_CHANGE_INSERT_3        "den Knopf..."
-  #define MSG_FILAMENT_CHANGE_LOAD_1          "Warte auf das"
+  #define MSG_FILAMENT_CHANGE_INSERT_1        "Filament einlegen"
+  #define MSG_FILAMENT_CHANGE_INSERT_2        "und Knopf"
+  #define MSG_FILAMENT_CHANGE_INSERT_3        "drücken..."
+  #define MSG_FILAMENT_CHANGE_LOAD_1          "Warte auf"
   #define MSG_FILAMENT_CHANGE_LOAD_2          "Laden des"
   #define MSG_FILAMENT_CHANGE_LOAD_3          "Filaments"
-  #define MSG_FILAMENT_CHANGE_EXTRUDE_1       "Warte auf das"
-  #define MSG_FILAMENT_CHANGE_EXTRUDE_2       "Extrudieren des"
+  #define MSG_FILAMENT_CHANGE_EXTRUDE_1       "Warte auf"
+  #define MSG_FILAMENT_CHANGE_EXTRUDE_2       "Extrusion des"
   #define MSG_FILAMENT_CHANGE_EXTRUDE_3       "Filaments"
-  #define MSG_FILAMENT_CHANGE_RESUME_1        "Warte auf das"
-  #define MSG_FILAMENT_CHANGE_RESUME_2        "Fortsetzen des"
+  #define MSG_FILAMENT_CHANGE_RESUME_1        "Warte auf"
+  #define MSG_FILAMENT_CHANGE_RESUME_2        "Fortsetzung des"
   #define MSG_FILAMENT_CHANGE_RESUME_3        "Druckes"
 #else // LCD_HEIGHT < 4
   #define MSG_FILAMENT_CHANGE_INIT_1          "Bitte warten..."
   #define MSG_FILAMENT_CHANGE_UNLOAD_1        "Auswerfen..."
   #define MSG_FILAMENT_CHANGE_INSERT_1        "Laden und Klick"
   #define MSG_FILAMENT_CHANGE_LOAD_1          "Laden..."
-  #define MSG_FILAMENT_CHANGE_EXTRUDE_1       "Extruden..."
+  #define MSG_FILAMENT_CHANGE_EXTRUDE_1       "Extrudieren..."
   #define MSG_FILAMENT_CHANGE_RESUME_1        "Weitermachen..."
 #endif // LCD_HEIGHT < 4