docs: Plan is marked as google.protobuf.Any in Swagger

[dongsam]

Summary

Plan model on Swagger v1.2.0 is marked as google.protobuf.Any because the Plan is interface type

Proposal

Auth's AccountI interface, which is such a case, is also in the following state.

// QueryAccountsResponse is the response type for the Query/Accounts RPC method.
message QueryAccountsResponse {
  // accounts are the existing accounts
  repeated google.protobuf.Any accounts = 1 [(cosmos_proto.accepts_interface) = "AccountI"];

  // pagination defines the pagination in the response.
  cosmos.base.query.v1beta1.PageResponse pagination = 2;
}

Therefore, we plan to solve the issue by adding comments to the Plan field of QueryPlansResponse so that the description can be exposed.

It can be solved from #39

Bullet Points

• adding comments to the Plan field of QueryPlansResponse

References

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