pipeline: need consistency on whitespace for generated json files

[k0l11]

1 space (prettier) vs. 2 spaces after : (generated by pipeline) example: https://github.com/genshinsim/gcsim/pull/1632/commits/fb2c26c2501b30c0b3a7a302a20347ea6bafadb1#diff-dbd9b1d1e51f49319cf8ff5178c4339f2a83d0d03410520502b4c9041341f939