[DOCS] Update last commit tag in v0.2.5 release notes

We have tagged the v0.2.5 release hence update the release
notes with last commit tag info.

Signed-off-by: Anup Patel <anup@brainfault.org>
Merge pull request #97 from avpatel/master

[DOCS] Update last commit tag in v0.2.5 release notes