english documentation for Feature Request: Option "Finish Time" in overview (#784)

Author: hebe2k

i18n/en/docusaurus-plugin-content-docs/current/features/sessions.mdx

@@ -35,6 +35,9 @@ Alternatively, clicking on the numerical value switches to the next display.
         If your vehicle supports this, the remaining time is determined from the vehicle data.
         Alternatively, the remaining time is calculated based on the current charging power and the charging target.
 
+        * **Finish time:** Shows the time when the charging target is reached based on the remaining time.
+        As with the remaining time, the prerequisite is that the vehicle can determine the remaining time from the vehicle data.
+
         * **Charging duration:** Shows the effective duration of the charging session.
         If the charging session is paused (e.g. due to PV surplus), the time is stopped.