Update fichier-markdown.md

module1/exo2/fichier-markdown.md

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+# Partie 1
+
+## Sub-Part 1
+
+This is an example of *italic text* and **bold text**.
+
+- Item 1
+- Item 2
+- Item 3
+
+1. First numbered item
+2. Second numbered item
+
+Here is a [link to GitLab](https://gitlab.com).
+