Update fichier-markdown.md

module1/exo2/fichier-markdown.md

----
-output:
-  pdf_document: default
-  html_document: default
----
 # Part 1
 
 ## Subpart 1: text
 
 A sentence without anything
 
-*One sentence  in italics *
+*One sentence in italics*
 
-**One sentence  in bold **
+**One sentence in bold**
 
-A link to [fun-mooc.fr]( https://www.fun-mooc.fr/ )
+A link to [fun-mooc.fr](https://www.fun-mooc.fr/)
 
 A line of `code`
 
-	
 ## Subpart 2: lists
 
-** Bullet list **
+### Bulleted list
 
--item  
-  - sub-item  
-  - sub-item  
--item  
--item  
+- item
+  - sub-item
+  - sub-item
+- item
+- item
 
-
-** Numbered list **
+### Numbered list
 
 1. item
 2. item
@@ -37,7 +30,6 @@ A line of `code`
 
 ## Subpart 3: code
 
-```
+```r
 # Code snippet
-```