Updated Z_MAX_POS for volcano hotend

Firmware/variants/1_75mm_MK3S-EINSy10a-E3Dv6full.h

@@ -69,7 +69,7 @@
 #define X_MIN_POS 0
 #define Y_MAX_POS 212.5
 #define Y_MIN_POS -4 //orig -4
-#define Z_MAX_POS 204
+#define Z_MAX_POS 196
 #define Z_MIN_POS 0.15
 
 // Canceled home position