Change light.turn_on and light.turn_off descriptions to match HA style (

#138213)

Change light.turn_on and turn_off descriptions to match HA style

Also remove one excessive comma from the light.toggle action description.

homeassistant/components/light/strings.json

@@ -285,7 +285,7 @@
   "services": {
     "turn_on": {
       "name": "[%key:common::action::turn_on%]",
-      "description": "Turn on one or more lights and adjust properties of the light, even when they are turned on already.",
+      "description": "Turns on one or more lights and adjusts their properties, even when they are turned on already.",
       "fields": {
         "transition": {
           "name": "[%key:component::light::common::field_transition_name%]",
@@ -364,7 +364,7 @@
     },
     "turn_off": {
       "name": "[%key:common::action::turn_off%]",
-      "description": "Turn off one or more lights.",
+      "description": "Turns off one or more lights.",
       "fields": {
         "transition": {
           "name": "[%key:component::light::common::field_transition_name%]",
@@ -383,7 +383,7 @@
     },
     "toggle": {
       "name": "[%key:common::action::toggle%]",
-      "description": "Toggles one or more lights, from on to off, or, off to on, based on their current state.",
+      "description": "Toggles one or more lights, from on to off, or off to on, based on their current state.",
       "fields": {
         "transition": {
           "name": "[%key:component::light::common::field_transition_name%]",