Update strings.xml

Refining strings.

app/src/main/res/values/strings.xml

@@ -12,12 +12,12 @@
     <!-- Sync Preferences -->
     <string name="sync_telegram_title">Forward all received SMS from this device to the configured Telegram chat or group</string>
     <string name="action_settings">Settings</string>
-    <string name="telegram_bot_key">Telegram Bot Key under which SMS2Telegram forwards all received SMS</string>
-    <string name="telegram_chat_id">Telegram Chat ID to which all received SMS should be forwarded</string>
+    <string name="telegram_bot_key">Telegram bot token to access the Bot API</string>
+    <string name="telegram_chat_id">Telegram chat ID to forward all received SMS to</string>
 
     <string name="enable_telegram_sync_key">sms2telegram.settings.tg.enabled</string>
     <string name="enable_telegram_bot_key_key">sms2telegram.settings.tg.bot.key</string>
     <string name="enable_telegram_chat_id_key">sms2telegram.settings.tg.chat.id</string>
-    <string name="sim0_number">Number or name of the users choice for SIM 1</string>
-    <string name="sim1_number">Number or name of the users choice for SIM 2</string>
+    <string name="sim0_number">Nickname for SIM 1</string>
+    <string name="sim1_number">Nickname for SIM 2</string>
 </resources>