fix code format in README

README.md

@@ -6,9 +6,48 @@ test port ssh
 
 ## how to 
 1. clone this repo to you own computer 
-    ` git clone https://git.erg.school/P039/art_num_2024.git`
+```
+   git clone https://git.erg.school/P039/art_num_2024.git
+```
 2. check before eatch courses for update 
-    ` git pull ` 
+```
+   git pull
+```
+3. create your own branch
+```
+git checkout -b prenom-nom
+```
+4. create and update README with your name
+```
+nano README 
+```
+5. save the file with `ctrl+X`
+6. check git tracking 
+```
+git status
+``` 
+7. add and commit the change in the git 
+```
+git add README.md  
+git commit -m 'change README'
+``` 
+8. check the commit was registered
+```
+git log
+git show <commit-hash>
+```
+9. push your branch on gitea
+```
+git push origin prenom-nom
+```
+10. update your branch with latest main branch
+```
+git checkout main
+git pull origin main
+git checkout prenom-nom 
+git rebase main 
+git log
+```
 
 ## content