ZOOKEEPER-4402: Added Hyperlink At LOGO
ZOOKEEPER-4402: Added Hyperlink At LOGO

Inserted a hyperlink AT logo
So that users can easily be redirected to the SITE

Author: gautammsuthar <69046800+gautammsuthar@users.noreply.github.com>

Reviewers: maoling <maoling@apache.org>

Closes #1771 from gautammsuthar/patch-1

maoling/zookeeper,maoling/zookeeper,arshadmohammad/zookeeper,maoling/zookeeper,arshadmohammad/zookeeper,apache/zookeeper,apache/zookeeper,arshadmohammad/zookeeper,apache/zookeeper,maoling/zookeeper,arshadmohammad/zookeeper,arshadmohammad/zookeeper,arshadmohammad/zookeeper,apache/zookeeper,apache/zookeeper,maoling/zookeeper,maoling/zookeeper,maoling/zookeeper,arshadmohammad/zookeeper,apache/zookeeper,arshadmohammad/zookeeper,apache/zookeeper,apache/zookeeper,maoling/zookeeper