fix(challenge-utils): update `filterByUsers` to use `userId`#228

Merged

sushilshinde merged 1 commit intotopcoder-platform:integration-v5-challenge-apifrom

cagdas001:integration-v5-challenge-api

Aug 25, 2020

Commits on Aug 23, 2020

fix(challenge-utils): update `filterByUsers` to use `userId`
cagdas001
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