ChangeLog: Update GitHub diff URL

Signed-off-by: Joachim Nilsson <[email protected]>

ChangeLog.md

@@ -3,7 +3,7 @@ ChangeLog
 
 All notable changes to the project are documented in this file.
 
-[v2.4.4][] - 2019-01-xx
+[v2.4.4][] - 2019-02-xx
 -----------------------
 
 ### Changes
@@ -491,7 +491,8 @@ Initial public release by Carsten Schill.
 
 [mrdisc]:     https://github.com/troglobit/mrdisc
 [RFC4286]:    https://tools.ietf.org/html/rfc4286
-[UNRELEASED]: https://github.com/troglobit/smcroute/compare/2.4.3...HEAD
+[UNRELEASED]: https://github.com/troglobit/smcroute/compare/2.4.4...HEAD
+[v2.4.4]:     https://github.com/troglobit/smcroute/compare/2.4.3...2.4.4
 [v2.4.3]:     https://github.com/troglobit/smcroute/compare/2.4.2...2.4.3
 [v2.4.2]:     https://github.com/troglobit/smcroute/compare/2.4.1...2.4.2
 [v2.4.1]:     https://github.com/troglobit/smcroute/compare/2.4.1...2.4.1