docs: Issue on page C/C++ Driver for ScyllaDB

[ldavulur]

I would like to report an issue on page https://cpp-driver.docs.scylladb.com/master/index

Problem

Broken link for "Shard Awareness" under "Features" - https://cpp-driver.docs.scylladb.com/master/index.html#features

Suggest a fix

Update with this link - https://cpp-driver.docs.scylladb.com/master/topics/scylla_specific/index.html#shard-awareness