Update 07a-Working-with-PIDs_CURL.md
Update 07a-Working-with-PIDs_CURL.md

implement everywhere more structured data field. give data format.
Sort data on indexes so it is more easily readable.
EUDAT-Training/B2SAFE-B2STAGE-Training,EUDAT-Training/B2SAFE-B2STAGE-Training,EUDAT-Training/B2SAFE-B2STAGE-Training