typo fix

Firmware/ultralcd.cpp

@@ -5219,7 +5219,7 @@ void extr_adj(int extruder) //loading filament for SNMM
 	lcd_print(snmm_extruder + 1);
 
 	// get response
-	bool reponse = mmu_get_reponse();
+	bool response = mmu_get_reponse();
 	if (!response) mmu_not_responding();
 	lcd_update_enable(true);
 	
@@ -5292,7 +5292,7 @@ void extr_unload() { //unloads filament
 		fprintf_P(uart2io, PSTR("U0\n"));
 
 		// get response
-		bool reponse = mmu_get_reponse();
+		bool response = mmu_get_reponse();
 		if (!response) mmu_not_responding();
 
 		lcd_update_enable(true);