Better explain LED lights feature

uhabits-android/src/main/res/values/strings.xml

@@ -163,7 +163,7 @@
     <string name="pure_black_description">Replaces gray backgrounds with pure black in night mode. Reduces battery usage in phones with AMOLED display.</string>
     <string name="interface_preferences">Interface</string>
     <string name="reverse_days">Reverse order of days</string>
-    <string name="reverse_days_description">Show days in reverse order on the main screen</string>
+    <string name="reverse_days_description">Show days in reverse order on the main screen.</string>
 
     <string name="day">Day</string>
     <string name="week">Week</string>
@@ -188,8 +188,8 @@
 
     <string name="sticky_notifications">Make notifications sticky</string>
     <string name="sticky_notifications_description">Prevents notifications from being swiped away.</string>
-    <string name="led_notifications">LED</string>
-    <string name="led_notifications_description">Notifications blinking light.</string>
+    <string name="led_notifications">Notification light</string>
+    <string name="led_notifications_description">Shows a blinking light for reminders. Only available in phones with LED notification lights.</string>
     <string name="repair_database">Repair database</string>
     <string name="database_repaired">Database repaired.</string>