Keyword docs: Link to wikipedia article for dynamic dispatch

Author: pierwill

library/std/src/keyword_docs.rs

@@ -2257,7 +2257,7 @@ mod await_keyword {}
 /// `dyn` is a prefix of a [trait object]'s type.
 ///
 /// The `dyn` keyword is used to highlight that calls to methods on the associated `Trait`
-/// are dynamically dispatched. To use the trait this way, it must be 'object safe'.
+/// are [dynamically dispatched]. To use the trait this way, it must be 'object safe'.
 ///
 /// Unlike generic parameters or `impl Trait`, the compiler does not know the concrete type that
 /// is being passed. That is, the type has been [erased].
@@ -2281,6 +2281,7 @@ mod await_keyword {}
 /// the method won't be duplicated for each concrete type.
 ///
 /// [trait object]: ../book/ch17-02-trait-objects.html
+/// [dynamically dispatched]: https://en.wikipedia.org/wiki/Dynamic_dispatch
 /// [ref-trait-obj]: ../reference/types/trait-object.html
 /// [ref-obj-safety]: ../reference/items/traits.html#object-safety
 /// [erased]: https://en.wikipedia.org/wiki/Type_erasure