Update README.md

Author: Guzz-T

README.md

@@ -53,7 +53,7 @@ The following example reads in data from the heat pump:
 from luxtronik import Luxtronik
 
 l = Luxtronik('192.168.1.23', 8889)
-heating_limit = l.parameters.get("ID_Einst_Heizgrenze")
+heating_limit = l.parameters.get("ID_Einst_Heizgrenze_Temp")
 
 # Do something else here...
 
@@ -200,7 +200,8 @@ from luxtronik import Luxtronik, Parameters
 l = Luxtronik('192.168.1.23', 8889)
 
 # Queue a parameter change
-l.parameters.set("ID_Einst_Heizgrenze", 14.0)
+# In this example, the domestic hot water temperature is set to 45 degrees.
+l.parameters.set("ID_Soll_BWS_akt", 45.0)
 
 # Write all queued changes to the heat pump
 l.write()