A few items in the CONTRIBUTORS file are out of date and no longer apply
Guide for Contributors
The link to the contribution agreement is invalid.
The statement on how to clone the github repo should read
git clone https://github.com/<your-github-name>/HPCC-Platform.git
Current open issues can be found at https://track.hpccsystems.com/secure/Dashboard.jspa . The link provided in the document points to pull requests
Pull upstream changes into your fork regularly
the git remote add statement is incorrect and should read
git remote add upstream https://github.com/hpcc-systems/HPCC-Platform.git
1. misspelled word "adddressing"
There is probably more but that's what jumped out at me