message: docs: Added details to Druid connection string
  * Added details to Druid connection string
  While linking Superset to Druid the correct connection string is very important however in the docs it is not well explained , so I added a little description to it
  * Update druid.mdx
diff: @@ -18,6 +18,12 @@ The connection string looks like:
  ```
  druid://<User>:<password>@<Host>:<Port-default-9088>/druid/v2/sql
  ```
  +Here's a breakdown of the key components of this connection string:
  +
  +User: username portion of the credentials needed to connect to your database
  +Password: password portion of the credentials needed to connect to your database
  +Host: IP address (or URL) of the host machine that's running your database
  +Port: specific port that's exposed on your host machine where your database is running
  ### Customizing Druid Connection
  