Clean up markdown

Author: berkus

README.md

@@ -1384,7 +1384,7 @@ Work in progress crates. Help the authors make these crates awesome!
 - [OxCC](https://github.com/jonlamb-gh/oxcc): A port of Open Source Car Control written in Rust
 - [Rubble](https://github.com/jonas-schievink/rubble): A pure-Rust embedded BLE stack [![crates.io](https://img.shields.io/crates/v/rubble.svg)](https://crates.io/crates/rubble)
 - [post-haste](https://github.com/petekubiak/post-haste): A no_std, alloc-free async Rust library for creating modular projects.
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 ## Panic handling
 
 There are many ways to handle panics in embedded devices, these crates provide helpful variants.