Update link to BCRPP platform on Consortia page and update description

[tahearn]

1. BCRPP platform is currently linked to github page. Please update link to: https://epidataplatforms.cancer.gov/bcrpp/#home

2. Edit language of BCRPP: "The BCRPP is a collaboration in the NCI Cohort Consortium Study...", delete "Study" so it reads "The BCRPP is a collaboration in the NCI Cohort Consortium..."