fix contributor's name in CHANGELOG_PENDING (#2599)

Refs https://github.com/tendermint/tendermint/pull/2506#issuecomment-428458974

CHANGELOG_PENDING.md

@@ -49,7 +49,7 @@ BUG FIXES:
 timeoutPrecommit before starting next round
 - [evidence] \#2515 fix db iter leak (@goolAdapter)
 - [common/bit_array] Fixed a bug in the `Or` function
-- [common/bit_array] Fixed a bug in the `Sub` function (@bradyjoestar)
+- [common/bit_array] Fixed a bug in the `Sub` function (@james-ray)
 - [common] \#2534 Make bit array's PickRandom choose uniformly from true bits
 - [consensus] \#1637 Limit the amount of evidence that can be included in a
   block