Previously, this called `check_full_res` for values and types, but not
macros. This would result in not showing when there was a partial
resolution for a parent of the item.
This now calls `check_full_res`. Additionally, it checks if there was a
disambiguator, and if so, says that specific kind wasn't found instead
of saying generically 'associated item'.
Before:
```
warning: unresolved link to `m`
--> m.rs:1:6
|
1 | /// [value@m]
| ^^^^^^^
|
= note: `#[warn(broken_intra_doc_links)]` on by default
= note: no item named `m` is in scope
= help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
```
After:
```
warning: unresolved link to `m`
--> m.rs:1:6
|
1 | /// [value@m]
| ^^^^^^^ help: to link to the macro, use its disambiguator: `m!`
|
= note: `#[warn(broken_intra_doc_links)]` on by default
= note: this link resolves to the macro `m`, which is not in the value namespace
```
Before:
```
= note: this link partially resolves to the struct `S`
= note: no `fmt` in `S`
```
After:
```
= note: the struct `S` has no field or associated item named `fmt`
```
Look at this beauty:
```rust
error: unresolved link to `S::h`
--> intra-link-errors.rs:51:6
|
51 | /// [type@S::h]
| ^^^^^^^^^ help: to link to the associated function, use its disambiguator: `S::h()`
|
= note: this link resolves to the associated function `h`, which is not in the type namespace
```
