chore: fix inconsistent struct name in comment (#1860)

Signed-off-by: zhedazijingang <unwrap_or_else@outlook.com>
Co-authored-by: Thomas N. <81727899+thomas-nguy@users.noreply.github.com>
Co-authored-by: songgaoye <217724508+songgaoye@users.noreply.github.com>

Author: 3 people

proto/cronos/query.proto

@@ -52,7 +52,7 @@ message ContractByDenomRequest {
   string denom = 1;
 }
 
-// ContractByDenomRequest is the response type of ContractByDenom call
+// ContractByDenomResponse is the response type of ContractByDenom call
 message ContractByDenomResponse {
   string contract      = 1;
   string auto_contract = 2;