FIX(docs): Change docs source repository from infr

- Change git clone from infrastructure.git to applications.git
- This matches the ArgoCD Application configuration
- Fixes 'No such file or directory' error in initContainer

docusaurus/deployment.yaml

@@ -30,7 +30,7 @@ spec:
         - |
           apk add --no-cache git
           echo "Cloning repository..."
-          git clone https://gitea0213.kro.kr/bluemayne/infrastructure.git /tmp/repo
+          git clone https://gitea0213.kro.kr/bluemayne/applications.git /tmp/repo
           cd /tmp/repo/docusaurus
           echo "Installing dependencies..."
           npm install --legacy-peer-deps