rlp: fix typos (#27484)

fix typos
Co-authored-by: john <yejiarui@123.com>

rlp/encode.go

@@ -419,7 +419,7 @@ func makeEncoderWriter(typ reflect.Type) writer {
 			// package json simply doesn't call MarshalJSON for this case, but encodes the
 			// value as if it didn't implement the interface. We don't want to handle it that
 			// way.
-			return fmt.Errorf("rlp: unadressable value of type %v, EncodeRLP is pointer method", val.Type())
+			return fmt.Errorf("rlp: unaddressable value of type %v, EncodeRLP is pointer method", val.Type())
 		}
 		return val.Addr().Interface().(Encoder).EncodeRLP(w)
 	}

rlp/encode_test.go

@@ -396,7 +396,7 @@ var encTests = []encTest{
 	{val: &struct{ TE testEncoder }{testEncoder{errors.New("test error")}}, error: "test error"},
 
 	// Verify the error for non-addressable non-pointer Encoder.
-	{val: testEncoder{}, error: "rlp: unadressable value of type rlp.testEncoder, EncodeRLP is pointer method"},
+	{val: testEncoder{}, error: "rlp: unaddressable value of type rlp.testEncoder, EncodeRLP is pointer method"},
 
 	// Verify Encoder takes precedence over []byte.
 	{val: []byteEncoder{0, 1, 2, 3, 4}, output: "C5C0C0C0C0C0"},