lint: migrate to review-dog (#5955)

golangci is being deprecated in April 15th.

Remove riot and add sims badge.

README.md

@@ -9,12 +9,12 @@ parent:
 
 [![version](https://img.shields.io/github/tag/cosmos/cosmos-sdk.svg)](https://github.com/cosmos/cosmos-sdk/releases/latest)
 [![CircleCI](https://circleci.com/gh/cosmos/cosmos-sdk/tree/master.svg?style=shield)](https://circleci.com/gh/cosmos/cosmos-sdk/tree/master)
+![Sims](https://github.com/cosmos/cosmos-sdk/workflows/Sims/badge.svg)
 [![codecov](https://codecov.io/gh/cosmos/cosmos-sdk/branch/master/graph/badge.svg)](https://codecov.io/gh/cosmos/cosmos-sdk)
 [![Go Report Card](https://goreportcard.com/badge/github.com/cosmos/cosmos-sdk)](https://goreportcard.com/report/github.com/cosmos/cosmos-sdk)
 [![license](https://img.shields.io/github/license/cosmos/cosmos-sdk.svg)](https://github.com/cosmos/cosmos-sdk/blob/master/LICENSE)
 [![LoC](https://tokei.rs/b1/github/cosmos/cosmos-sdk)](https://github.com/cosmos/cosmos-sdk)
 [![API Reference](https://godoc.org/github.com/cosmos/cosmos-sdk?status.svg)](https://godoc.org/github.com/cosmos/cosmos-sdk)
-[![riot.im](https://img.shields.io/badge/riot.im-JOIN%20CHAT-green.svg)](https://riot.im/app/#/room/#cosmos-sdk:matrix.org)
 
 The Cosmos-SDK is a framework for building blockchain applications in Golang.
 It is being used to build [`Gaia`](https://github.com/cosmos/gaia), the first implementation of the Cosmos Hub.