update comment

Author: andrei-rusu

src/uipath_langchain/vectorstores/context_grounding_vectorstore.py

@@ -3,7 +3,7 @@
 
 This is a read-only vector store that uses the UiPath Context Grounding API to retrieve documents.
 
-You need to set the following environment variables:
+You need to set the following environment variables (also see .env.example):
 ### - UIPATH_URL="https://alpha.uipath.com/{ORG_ID}/{TENANT_ID}"
 ### - UIPATH_ACCESS_TOKEN={BEARER_TOKEN_WITH_CONTEXT_GROUNDING_PERMISSIONS}
 ### - UIPATH_FOLDER_PATH="" - this can be left empty