Merge branch 'jsjoeio/108-doc-attribute-examples' of https://github.com/jsjoeio/rust-by-example into jsjoeio/108-doc-attribute-examples

Author: jsjoeio

src/meta/doc.md

@@ -104,6 +104,8 @@ Using this tells `rustdoc` not to include this in documentation:
 pub use self::async_await::*;
 ```
 
+For documentation, `rustdoc` is widely used by the community. It's what is used to generate the [std library docs](https://doc.rust-lang.org/std/).
+
 ### See also:
 
 - [The Rust Book: Making Useful Documentation Comments][book]