SPKLR-108: Contrib guidelines updated to link issue number
SPKLR-108: Contrib guidelines updated to link issue number


Closes #108
USCDataScience/sparkler,sujen1412/sparkler,sujen1412/sparkler,USCDataScience/sparkler,sujen1412/sparkler,USCDataScience/sparkler,sujen1412/sparkler,sujen1412/sparkler,USCDataScience/sparkler,USCDataScience/sparkler