fix: Update Astra DB component UI and starter project configuration

- Improved AstraDB component's embedding provider link with better accessibility attributes
- Updated Vector Store RAG starter project JSON with formatted configuration
- Refined UI text and link presentation for better user experience

src/backend/base/langflow/components/vectorstores/astradb.py

@@ -819,9 +819,9 @@ class AstraDBVectorStoreComponent(LCVectorStoreComponent):
                     "02_embedding_generation_provider"
                 ]["helper_text"] = (
                     "To create collections with more embedding provider options, go to "
-                    "<a href='https://astra.datastax.com/org/"
-                    f"{org_id}/settings/manageIntegrations'>"
-                    " your database in Astra DB</a>"
+                    "<a class=\"underline\" target=\"_blank\" rel=\"noopener noreferrer\" "
+                    f"href=\"https://astra.datastax.com/org/{org_id}/settings/manageIntegrations\">"
+                    "your database in Astra DB</a>."
                 )
 
                 # Initializing database condition