Fix typos and grammar in documentation and code comments (#2213)

* Update README.md

* Update tx.pb.go

* Update handler_plugin_encoders_test.go

* [autofix.ci] apply automated fixes

---------

Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>

Author: vtjl10

scripts/contrib/relayer-tests/README.md

@@ -9,6 +9,6 @@ Make sure you run below scripts under `wasmd/scripts/contrib/relayer-tests` dire
 
 ## Thank you
 The setup scripts here are taken from [cosmos/relayer](https://github.com/cosmos/relayer)
-Thank your relayer team for these scripts.
+Thank you relayer team for these scripts.
 
 

x/wasm/keeper/handler_plugin_encoders_test.go

@@ -917,7 +917,7 @@ func TestConvertWasmCoinToSdkCoin(t *testing.T) {
 			},
 			expErr: true,
 		},
-		"denom to short": {
+		"denom too short": {
 			src: wasmvmtypes.Coin{
 				Denom:  "f",
 				Amount: "1",