Rework Git lecture, unified slide set and exercise (#13)

* Rework Git lecture, unified slide set and exercise

* Add remark on content sources

* Add missing period

* Update material/2_tue/git/tasks.qmd

* Update material/2_tue/git/tasks.qmd

_quarto.yml

@@ -53,8 +53,10 @@ website:
                 text: "🛠 4 - Envs & Pkgs: Exercises"
           - section: "Tuesday"
             contents: 
-              - href: material/2_tue/git/intro_slides.md
-                text: "📝 1 - GIT"    
+              - href: material/2_tue/git/slides.md
+                text: "📝 1 - Advanced Git and Contributing"
+              - href: "material/2_tue/git/tasks.qmd"
+                text: "🛠 1 - Git: Exercises"
               - href: "material/2_tue/unittest/missing.qmd"
                 text: "📝 2 - Unit Testing"
               - href: "material/3_tue/CI/missing.qmd"
@@ -117,4 +119,4 @@ format:
       sidebar-width: 400px
     code-annotations: hover
     margin-header: |
-      ![](https://www.simtech.uni-stuttgart.de/img/events/Summer-School/Zeichenflaeche-3-Kopie-42x.png?__scale=w:150,h:150)
+      ![](https://www.simtech.uni-stuttgart.de/img/events/Summer-School/Zeichenflaeche-3-Kopie-42x.png?__scale=w:150,h:150)