investigate datastax link issues (docs)

[pjfanning]

## HTTP failure response
`[https://docs.datastax.com/en/developer/java-driver/4.17/`](https://docs.datastax.com/en/developer/java-driver/4.17/%60) status 404 Not Found
 - index.html
 - overview.html

`[https://docs.datastax.com/en/developer/java-driver/4.17/manual/core/configuration/`](https://docs.datastax.com/en/developer/java-driver/4.17/manual/core/configuration/%60) status 404 Not Found
 - configuration.html
 - journal.html

[nvollmar]

Links should be:

• https://docs.datastax.com/en/developer/java-driver/4.17/index.html
• https://docs.datastax.com/en/developer/java-driver/4.17/manual/core/configuration/index.html

But for some reason %60 (url encoded ') is appended.