Clarify you don’t have to use ALL of CIS (#11823)

# Checklist for submitter

If some of the following don't apply, delete the relevant line.

- [ ] Changes file added for user-visible changes in `changes/` or
`orbit/changes/`.
See [Changes
files](https://fleetdm.com/docs/contributing/committing-changes#changes-files)
for more information.
- [ ] Documented any API changes (docs/Using-Fleet/REST-API.md or
docs/Contributing/API-for-contributors.md)
- [ ] Documented any permissions changes
- [ ] Input data is properly validated, `SELECT *` is avoided, SQL
injection is prevented (using placeholders for values in statements)
- [ ] Added support on fleet's osquery simulator `cmd/osquery-perf` for
new osquery data ingestion features.
- [ ] Added/updated tests
- [ ] Manual QA for all new/changed functionality
  - For Orbit and Fleet Desktop changes:
- [ ] Manual QA must be performed in the three main OSs, macOS, Windows
and Linux.
- [ ] Auto-update manual QA, from released version of component to new
version (see [tools/tuf/test](../tools/tuf/test/README.md)).

README.md

@@ -14,7 +14,9 @@ Organizations like Fastly and Gusto use Fleet for vulnerability reporting, detec
 To see what kind of data you can use Fleet to gather, check out the [table reference documentation](https://fleetdm.com/tables).
 
 #### Out-of-the-box policies
-Fleet includes out-of-the box support for all [CIS benchmarks for macOS and Windows](https://fleetdm.com/pricing), as well as many [other queries](https://fleetdm.com/queries).
+Fleet includes out-of-the box support for all [CIS benchmarks for macOS and Windows](https://fleetdm.com/pricing), as well as many [simpler queries](https://fleetdm.com/queries).
+
+Take as much or as little as you need for your organization.
 
 #### Supported platforms
 Here are the platforms Fleet currently supports:
@@ -56,7 +58,7 @@ In keeping with Fleet's value of openness, [Fleet Device Management's company ha
 
 
 ## Is it any good?
-Fleet is used in production by IT and security teams with thousands of laptops and servers.  Many deployments support tens of thousands of hosts, and a few large organizations have 400,000+ hosts enrolled.
+Fleet is used in production by IT and security teams with thousands of laptops and servers.  Many deployments support tens of thousands of hosts, and a few large organizations manage deployments as large as 400,000+ hosts.