Fix to confluence loader documentation. (#920)

Add clarity on how to use basic auth.

llama_hub/confluence/README.md

@@ -3,7 +3,7 @@
 This loader loads pages from a given Confluence cloud instance. The user needs to specify the base URL for a Confluence 
 instance to initialize the ConfluenceReader - base URL needs to end with `/wiki`. The user can optionally specify 
 OAuth 2.0 credentials to authenticate with the Confluence instance. If no credentials are specified, the loader will
-look for `CONFLUENCE_API_TOKEN` or `CONFLUENCE_USERNAME`/`CONFLUENCE_PASSWORD` environment variables to proceed with basic authentication.
+look for `CONFLUENCE_API_TOKEN` or `CONFLUENCE_USERNAME`/`CONFLUENCE_PASSWORD` environment variables to proceed with basic authentication. Keep in mind `CONFLUENCE_PASSWORD` is not your actual password, but an API Token obtained here: https://id.atlassian.com/manage-profile/security/api-tokens.
 
 For more on authenticating using OAuth 2.0, checkout:
 - https://atlassian-python-api.readthedocs.io/index.html