Add missing string for Shelly away mode switch (#157488)

Author: bieniu

homeassistant/components/shelly/strings.json

@@ -557,6 +557,9 @@
       "child_lock": {
         "name": "Child lock"
       },
+      "cury_away_mode": {
+        "name": "Away mode"
+      },
       "frost_protection": {
         "name": "[%key:component::shelly::entity::climate::thermostat::state_attributes::preset_mode::state::frost_protection%]"
       },

homeassistant/components/shelly/switch.py

@@ -306,7 +306,6 @@ class RpcSwitchDescription(RpcEntityDescription, SwitchEntityDescription):
     "cury_away_mode": RpcSwitchDescription(
         key="cury",
         sub_key="away_mode",
-        name="Away mode",
         translation_key="cury_away_mode",
         is_on=lambda status: status["away_mode"],
         method_on="cury_set_away_mode",