clarify-dremioai (#23)

* Update README.md

Clarified install instructions

* Update README.md

* Update README.md

uri clarification and project id requirement for cloud

* Update README.md

Co-authored-by: Aniket Kulkarni <aniket-s-kulkarni@users.noreply.github.com>

* Update README.md

Co-authored-by: Aniket Kulkarni <aniket-s-kulkarni@users.noreply.github.com>

* Update README.md

Co-authored-by: Aniket Kulkarni <aniket-s-kulkarni@users.noreply.github.com>

---------

Co-authored-by: Aniket Kulkarni <aniket-s-kulkarni@users.noreply.github.com>

Author: alex-aidun-dremio

README.md

@@ -93,10 +93,16 @@ $ uv run dremio-mcp-server config create dremioai \
     # the endpoint portion of the URL for your environment
     --pat <dremio pat> \
     # https://docs.dremio.com/current/security/authentication/personal-access-tokens/#using-a-pat
-    # optional: add your project ID if setting up for dremio cloud
+    # required for cloud: add your project ID if setting up for dremio cloud
     # --project-id <dremio project id>
 ```
 
+Note: the uri is api endpoint associated with your environment:
+
+- For Dremio cloud based in the US region (https://app.dremio.cloud)	use `https://api.dremio.cloud` or use the short hand `prod`
+- For Dremio cloud based in the EMEA region (https://app.eu.dremio.cloud)	use `https://api.eu.dremio.cloud` or use the short hand `prodemea`
+- For SW/K8S deployments use https://<coordinator‑host>:<9047 or custom port>
+
 Note: For security purposes, if you don't want the PAT to leak into your shell history file, create a file with your PAT in it and give it as an argument to the dremio config. 
 
 Example: