message: Format contracts/burner/README.md
diff: # Burner Contract
  -This is a simple contract to demonstrate using migrations to
  -shutdown (or "burn") contracts using the migration feature
  -added in CosmWasm 0.9.
  +This is a simple contract to demonstrate using migrations to shutdown (or
  +"burn") contracts using the migration feature added in CosmWasm 0.9.
  -This contract cannot be installed directly (via `init`), but is only
  -designed to be used for `migrate`. When migrating any existing
  -contract to this burner contract, we delete all storage and
  -send all bank tokens to a specified address, doing a basic
  -cleanup of the contract.
  +This contract cannot be installed directly (via `init`), but is only designed to
  +be used for `migrate`. When migrating any existing contract to this burner
  +contract, we delete all storage and send all bank tokens to a specified address,
  +doing a basic cleanup of the contract.
  -You can use this contract as-is, or fork it and customize it
  -more if you want to do more detailed cleanup.
  +You can use this contract as-is, or fork it and customize it more if you want to
  +do more detailed cleanup.
  