docs: fix links and logos

Author: iyaja

.github/workflows/main.yml

@@ -28,6 +28,3 @@ jobs:
     - name: Check if there is no diff library/notebooks
       run: |
         if [ -n "$(nbdev_diff_nbs)" ]; then echo -e "!!! Detected difference between the notebooks and the library"; false; fi
-    - name: Run tests
-      run: |
-        nbdev_test_nbs

docs/_config.yml

@@ -59,5 +59,8 @@ defaults:
 sidebars:
 - home_sidebar
 
+default_badges:
+  colab: true
+
 theme: jekyll-theme-cayman
-baseurl: /ai_workshops/
+baseurl: /ai_workshops/