False-positive for `missing_safety_doc` with block-comments

[snyball]

With the following code:

/**
 * Drop an external reference
 *
 * # Arguments
 *
 * - `id` : Reference ID
 *
 * # Safety
 *
 * Using the reference after it has been dropped is UB.
 */
pub unsafe fn drop_ext(&mut self, id: u32) {
    self.extref.remove(&id);
}

I get this warning:

warning: unsafe function's docs miss `# Safety` section
   --> src/nkgc.rs:779:5
    |
779 | /     pub unsafe fn drop_ext(&mut self, id: u32) {
780 | |         self.extref.remove(&id);
781 | |     }
    | |_____^
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#missing_safety_doc

This code does not result in a clippy warning:

///
/// Drop an external reference
///
/// # Arguments
///
/// - `id` : Reference ID
///
/// # Safety
///
/// Using the reference after it has been dropped is UB.
///
pub unsafe fn drop_ext(&mut self, id: u32) {
    self.extref.remove(&id);
}

Given that /** ... */-style doc-comments are supported by rustdoc, I would expect them to be supported by clippy as well.

[flip1995]

Duplicate of #5593

[flip1995]

A fix is on its way: #5659