Update no_link to use the attribute template

Author: ehuss

src/items/extern-crates.md

@@ -88,6 +88,21 @@ The *`no_link` [attribute][attributes]* may be specified on an `extern crate` it
 > other_crate::some_macro!();
 > ```
 
+r[items.extern-crate.no_link.syntax]
+The `no_link` attribute uses the [MetaWord] syntax and thus does not take any inputs.
+
+r[items.extern-crate.no_link.allowed-positions]
+The `no_link` attribute may be specified on an `extern crate` declaration.
+
+> [!NOTE]
+> `rustc` currently warns on some positions where it is ignored, but this may become an error in the future.
+
+r[items.extern-crate.no_link.duplicates]
+Duplicate instances of the `no_link` attribute are ignored.
+
+> [!NOTE]
+> `rustc` currently warns about unused duplicate `no_link` attributes.
+
 [identifier]: ../identifiers.md
 [RFC 940]: https://github.com/rust-lang/rfcs/blob/master/text/0940-hyphens-considered-harmful.md
 [`macro_use` attribute]: ../macros-by-example.md#the-macro_use-attribute