Add list of supported disambiguators and suffixes for intra-doc links in the rustdoc book

Author: GuillaumeGomez

src/doc/rustdoc/src/write-documentation/linking-to-items-by-name.md

@@ -88,13 +88,16 @@ fn Foo() {}
 ```
 
 These prefixes will be stripped when displayed in the documentation, so `[struct@Foo]` will be
-rendered as `Foo`.
+rendered as `Foo`. The following prefixes are available: `struct`, `enum`, `trait`, `union`,
+`mod`, `module`, `const`, `constant`, `fn`, `function`, `method`, `derive`, `type`, `value`,
+`macro`, `prim` or `primitive`.
 
 You can also disambiguate for functions by adding `()` after the function name,
-or for macros by adding `!` after the macro name:
+or for macros by adding `!` after the macro name. The macro `!` can be followed by `()`, `{}`,
+or `[]`. Example:
 
 ```rust
-/// This is different from [`foo!`]
+/// This is different from [`foo!()`].
 fn foo() {}
 
 /// This is different from [`foo()`]