fix crevice markdown lints

crates/crevice/README.md

@@ -18,9 +18,9 @@ Examples in this crate use cgmath, but any math crate that works with the mint
 crate will also work. Some other crates include nalgebra, ultraviolet, glam, and
 vek.
 
-### Examples
+## Examples
 
-#### Single Value
+### Single Value
 
 Uploading many types can be done by deriving `AsStd140` and using
 [`as_std140`][std140::AsStd140::as_std140] and
@@ -126,10 +126,11 @@ Crevice supports Rust 1.46.0 and newer due to use of new `const fn` features.
 
 Licensed under either of
 
- * Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
- * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+* Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or [http://www.apache.org/licenses/LICENSE-2.0](http://www.apache.org/licenses/LICENSE-2.0))
+* MIT license ([LICENSE-MIT](LICENSE-MIT) or [http://opensource.org/licenses/MIT](http://opensource.org/licenses/MIT))
 
 at your option.
 
 ### Contribution
+
 Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.