Minor change to the Json Config format for the replay file.
Minor change to the Json Config format for the replay file.

See: test/fuzzers/configs/replay_packet_fuzzer for example configurations.

Bug: webrtc:10117
Change-Id: Ife2bf7d053bc4feb4d7e6e38ff31280236c962b6
Reviewed-on: https://webrtc-review.googlesource.com/c/116764
Commit-Queue: Benjamin Wright <d97cb5a683a42395ddbd3524ae4315b2c4b93d14@webrtc.org>
Reviewed-by: Åsa Persson <5ff7466874d1fe71d5fe7d79a8a23f5ef50662da@webrtc.org>
Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#26204}
ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc