Docs: Explain how to hide X-rays and Our data sections (#12183)

* Explain hide X-rays and Our data sections [ci skip]

* Maz suggestion [ci skip]

Co-Authored-By: Maz Ameli <maz@metabase.com>

Co-authored-by: Maz Ameli <maz@metabase.com>

docs/users-guide/01-what-is-metabase.md

@@ -14,9 +14,9 @@ So, you've [gotten Metabase up and running](../operations-guide/start.md) and [c
 
 Fresh out of the box, Metabase will show you a few things on the home page:
 
-- Some [automatic explorations](14-x-rays.md) of your tables that you can look at and save as a dashboard if you like any of them.
+- Some [automatic explorations](14-x-rays.md) of your tables that you can look at and save as a dashboard if you like any of them. (Administrators can permanently hide this section by clicking the `X` that appears on hover.)
 - An area where things you or your teammates create will show up, along with a link to see all the dashboards, questions, and pulses you have.
-- A list of the databases you've connected to Metabase.
+- A list of the databases you've connected to Metabase. (As with x-rays, administrators can permanently hide this section by clicking the `X` that appears on hover. You can always click on "Browse Data" from the main nav bar to see your databases and tables.)
 
 ![Our data](./images/our-data.png)
 

docs/users-guide/14-x-rays.md

@@ -60,6 +60,8 @@ If you come across an x-ray that's particularly interesting, you can save it as
 
 If for some reason x-rays aren't a good fit for your team or your data, administrators can turn them off completely in the general settings area of the Admin Panel.
 
+The x-ray suggestions that appear on the homepage of Metabase will be hidden if you pin any dashboards in the "Our Analytics" collection. You can also manually remove these suggestions for all users by hovering over that section on the homepage and clicking the `X` next to "Try these x-rays based on your data" when logged in as an administrator. This won't disable the x-ray features in the rest of Metabase.
+
 ### Need help?
 
 If you still have questions about x-rays or comparisons, you can head over to our [discussion forum](https://discourse.metabase.com/). See you there!