Formatting updates for Retrieve and Rank Java SDK README.md file
Formatting updates for Retrieve and Rank Java SDK README.md file

watson-developer-cloud/retrieve-and-rank-java,watson-developer-cloud/retrieve-and-rank-java,SupriyaNayak/Hack,SupriyaNayak/Hack,SupriyaNayak/Hack,watson-developer-cloud/retrieve-and-rank-java