chore: Update _config.yml with excluded files and directories

_config.yml

@@ -1 +1,17 @@
-theme: jekyll-theme-minimal
+theme: jekyll-theme-minimal
+title: Data Engineering
+exclude:
+  exclude:
+    - .git
+    - .gitignore
+    - .github
+    - .git attributes
+    - .git modules
+    - week_1_basics_and_setup/*
+    - week_2_workflow_orchestration/*
+    - week_3_data_warehouse/*
+    - week_4_analytics_engineering/*
+    - week_5_batch/*
+    - workshop/*
+    - README.md
+    - main.txt