L. Jiang

Results 9 issues of L. Jiang

**Relation issue** https://github.com/swaggo/swag/issues/1179

**Describe the PR** Here we are going to trim `//`, `/*` at the comment before and `*/` last, should use `TrimPrefix` and `TrimSuffix` instead of `TrimLeft` and `TrimRight`. **Relation issue**...

1. Rename Between function to MustBetween 2. add Between function with return error 3. add Between documents in README.md Log: fix Between panic problem