cmd/gf: gf gen pb did not escape the backtick in dc tag

[RyoJerryYu]

Go version

go1.23.2 linux/amd64

GoFrame version

2.7.4

Can this bug be reproduced with the latest release?

Option Yes

What did you do?

I run df gen pb in my project, where my .proto file have field comments containing ` as below:

message SomeMessage {
  // Some comment on field with `backtick` in the comment.
  string a_field = 1;
}

What did you see happen?

It generate codes be like below:

type SomeMessaage struct {
  // ...
  AField string `protobuf:"..." json:"..." dc:"Some comment on field with`backtick` in the comment"`
}

It is a syntax error, and it will lead to a build failed.

What did you expect to see?

It should generate something as below, for excaping the backtick:

type SomeMessaage struct {
  // ...
  AField string "protobuf:\"...\" json:\"...\" dc:\"Some comment on field with`backtick` in the comment\""
}