ETOP HT-CH thermostat: minor naming change

- follow HA naming convention.
- manufacturer seems to be Ferco Floor (to disambiguate from Ferco Seating, Ferco Aerospace and others)

custom_components/tuya_local/devices/etop_htch_thermostat.yaml

@@ -1,7 +1,7 @@
-name: RF Heat Cold thermostat
+name: RF heat cold thermostat
 products:
   - id: 5p5bakocfzfxj7bc
-    manufacturer: FERCO
+    manufacturer: Ferco Floor
     model: GN1
     model_id: ETOP-HT-CH
 entities: