Support compile_fail option in an example section #46
Description
The argument is described in https://doc.rust-lang.org/rustdoc/documentation-tests.html#attributes
This snipped is not recognized as rust code.
//! ```rust,compile_fail
//! use tabled::Tabled;
//!
//! #[derive(Tabled)]
//! struct SomeType {
//! field1: SomeOtherType,
//! }
//!
//! struct SomeOtherType;
//! ```
The correct behavior should be the same as no_run, ignore, should_panic options has
use tabled::Tabled;
#[derive(Tabled)]
struct SomeType {
field1: SomeOtherType,
}
struct SomeOtherType;