docs: fix broken ecosystem link (#4222)
docs: fix broken ecosystem link (#4222)

I put it as the awesome repo ecosytem section as this is currently the only place where there is tendermint only ecosystem information.

- closes #4198

Signed-off-by: Marko Baricevic <d32c6d9e4f32928f8497b4e6df66c8d9233a805d@yahoo.com>
tendermint/tendermint,tendermint/tendermint,tendermint/tendermint,tendermint/tendermint