fix markdownlint

CONTRIBUTING.md

@@ -1,11 +1,13 @@
-# How to contribute to this guide?
+# Contributing / Contribuer
+
+## How to contribute to this guide?
 
 It is entirely possible to update this guide or contact me to provide feedback.
 
 1. If you notice an issue, you can first create a GitHub issue.
 2. Propose a pull request.
 
-# Comment contribuer à ce guide ?
+## Comment contribuer à ce guide ?
 
 Il est tout à fait possible de faire évoluer ce guide ou me contacter pour me
 faire part d'un retour d'expérience.

README.md

@@ -9,7 +9,7 @@
   - [Introduction](#introduction)
     - [Preparing for the Piscine](#preparing-for-the-piscine)
     - [Computer Science Harmonization](#computer-science-harmonization)
-    - [Specifically?](#specifically)
+    - [What are we talking about?](#what-are-we-talking-about)
   - [Resources](#resources)
 
 ## Introduction
@@ -132,7 +132,7 @@ essential for building larger programs but also allow for faster programming.
 
 Focus on memory management and data structures.
 
-  [Beej's Guide to C programming](https://beej.us/guide/bgc/)
+- [Beej's Guide to C programming](https://beej.us/guide/bgc/)
 - [Learn X in Y minutes - C](https://learnxinyminutes.com/docs/c/)
 - <https://nostarch.com/Effective_C>