Improve md formatting in README.md

README.md

@@ -44,6 +44,7 @@ script: [teach\_utils/invite\_students.py](teach_utils/invite_students.py)
 **usage**:
 
 Invite students to `class-group`:
+
 `python invite_students.py emails.txt https://gitlab-instance.com/class-group`
 
 </details>
@@ -64,6 +65,7 @@ script: [teach\_utils/moodle\_to\_student\_groups.py](teach_utils/moodle_to_stud
 **usage**:
 
 Create student (sub)groups inside `class-group`:
+
 `python moodle_to_student_groups.py students_moodle.csv https://gitlab-instance.com/class-group`
 
 </details>
@@ -96,6 +98,7 @@ script: [teach\_utils/collect\_forks.py](teach_utils/collect_forks.py)
 **usage**:
 
 Collect all group-owned forks of upstream-project, and write the JSON list to `forks.json`. Commits and autostart URLs will point to the last commit before 23h59 on March 15, 2022:
+
 ```sh
 python collect_forks.py \
   --deadline "2022-03-15T23:59" \