Code demonstrating submitting blob in Golang doesn't work

[0xbok]

https://docs.celestia.org/developers/submit-data#grpc-to-a-consensus-node-via-the-user-package

got get fails with:

go: github.com/cosmos/cosmos-sdk/[email protected]: parsing go.mod:
	module declares its path as: cosmossdk.io/simapp
	        but was required as: github.com/cosmos/cosmos-sdk/simapp
	removing github.com/cosmos/cosmos-sdk/[email protected]
...<a long list of similar errors>

related issue: https://github.com/cosmos/cosmos-sdk/issues/15912