PR links in changelog

Author: Gp2mv3

CHANGELOG.md

@@ -1,9 +1,10 @@
 # Changelog react-native-push-notification
 
 ## v3.1.1
-- Android Oreo support (SDK >= 26) (PR #657)
-- Firebase (FCM) Support (PR #744)
-- Twilio support (PR #744)
-- checkPermissions (PR #721)
-- Remove default alert for silent push (PR #707)
-- clearLocalNotification (PR #711)
+
+- Android Oreo support (SDK >= 26) (PR [#657](https://github.com/zo0r/react-native-push-notification/pull/657))
+- Firebase (FCM) Support (PR [#717](https://github.com/zo0r/react-native-push-notification/pull/717))
+- Twilio support (PR [#744](https://github.com/zo0r/react-native-push-notification/pull/744))
+- checkPermissions (PR [#721](https://github.com/zo0r/react-native-push-notification/pull/721))
+- Remove default alert for silent push (PR [#707](https://github.com/zo0r/react-native-push-notification/pull/707))
+- clearLocalNotification (PR [#711](https://github.com/zo0r/react-native-push-notification/pull/711))