Adding troubleshooting section to contribute.md (#2936)
Adding troubleshooting section to contribute.md (#2936)

* Update contribute.md

* Update contribute.md

Co-authored-by: Mark Roghelia <ee82563f1518620c297d6219d50457ab04fcd2e7@microsoft.com>
Microsoft/vsts-agent,Microsoft/vsts-agent,Microsoft/vsts-agent,Microsoft/vsts-agent