chore: add gray-matter dependency for markdown frontmatter parsing

public/images/people/maxime_daniel/maxime_daniel.md

@@ -2,16 +2,25 @@
 id: maxime_daniel
 name: Maxime Daniel
 rank: 2
-memberships: [foundation, tech, technology_council]
-category: [foundation]
-bio: C, python and nodejs developer, Gentoo user, Linux and Music addict
-excerpt: C, python and nodejs developer, Gentoo user, Linux and Music addict
-linkedin: https://www.linkedin.com/in/maxime-daniel-29bb8055/
-github: https://github.com/maxux
-websites: https://www.threefold.tech
+memberships:
+  - foundation
+  - tech
+  - technology_council
+category:
+  - foundation
+bio: 'C, python and nodejs developer, Gentoo user, Linux and Music addict'
+excerpt: 'C, python and nodejs developer, Gentoo user, Linux and Music addict'
+linkedin: 'https://www.linkedin.com/in/maxime-daniel-29bb8055/'
+github: 'https://github.com/maxux'
+websites: 'https://www.threefold.tech'
 image: ./maxime_daniel.png
-projects: [threefold_tech]
-countries: [Belgium]
-cities: [Liège]
+projects:
+  - threefold_tech
+countries:
+  - Belgium
+cities:
+  - Liège
 private: 0
+title: 'C, python and nodejs developer, Gentoo user, Linux and Music addict'
 ---
+