deploying docs: docs: Added details to Druid connection string (#20264)

* 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 (apache/superset@a807290e3dc73d70c121a43daf1edeb2dec5bf3c)
81 files changed