DOCSP-45626-include-note-related-to-pre-flight-failure-for-v4-2 (#779)

## Description

The ticket requests to add additional info on resolving pre-flight
checks failure when upgrading from v4.2, but there's an existing warning
in the [Upgrade Ops
Manager](https://www.mongodb.com/docs/ops-manager/current/tutorial/upgrade-ops-manager/)
that states that "Ops Manager 8.0 doesn't support MongoDB 4.2 and
earlier.":

> Ops Manager 8.0 doesn't support MongoDB 4.2 and earlier. If you're
using MongoDB 4.2 or earlier and want to upgrade to Ops Manager 8.0, you
must upgrade to at least MongoDB 4.4. If you don't upgrade to at least
MongoDB 4.4, Ops Manager fails [pre-flight
checks](https://www.mongodb.com/docs/ops-manager/current/tutorial/resolve-pre-flight-check/#std-label-fix-local-mode-start-failure)
and won't start. After upgrading to at least MongoDB 4.4, we still
recommend that you upgrade to at least MongoDB 6.0 before upgrading to
Ops Manager 8.0.

I'm including the note in the [Resolve Pre-flight Check
Failure](https://www.mongodb.com/docs/ops-manager/current/tutorial/resolve-pre-flight-check/)
so that users are aware of the reason for failure and that they should
be upgrading to at least v4.4.

## Jira Ticket

- [DOCSP-45626](https://jira.mongodb.org/browse/DOCSP-45626)

## Staging

-
[STAGING](https://deploy-preview-779--docs-ops-manager.netlify.app/tutorial/resolve-pre-flight-check/)

- [LATEST BUILD
LOG](https://app.netlify.com/sites/docs-ops-manager/deploys/67d0807e0a9ea200082689f7)

### Self-Review Checklist

- [ ]
[Define](https://wiki.corp.mongodb.com/display/DE/Taxonomy+tagging+instructions)
taxonomy
[values](https://wiki.corp.mongodb.com/display/DE/Docs+Taxonomy) at top
of page.
- [ ] Add genre facets (tutorial or reference), as in this [example
PR](10gen/cloud-docs#5042).
- [ ] Add programmingLanguage (if necessary).
- [ ] Add meta keywords (if necessary).
- [x] Resolve any new warnings or errors in the build.
- [x] Proofread for spelling and grammatical errors.
- [x] Check staging for rendering issues.
- [x] Confirm links are working.

Author: morales-mario-mdb

source/includes/admonitions/warning/om8-manages-mdb-6-or-later.rst

@@ -3,7 +3,8 @@
    |onprem| 8.0 doesn't support MongoDB 4.2 and earlier. If you're using
    MongoDB 4.2 or earlier and want to upgrade to |onprem| 8.0, you must
    upgrade to at least MongoDB 4.4. If you don't upgrade to at least MongoDB 4.4, 
-   |onprem| fails :ref:`pre-flight checks <fix-local-mode-start-failure>` and won't start. 
+   |onprem| fails |pre-flight checks| and won't start. 
    After upgrading to at least MongoDB 4.4, we still recommend that you upgrade
-   to at least MongoDB 6.0 before upgrading to |onprem| 8.0.
+   to the :ref:`latest MongoDB version compatible <mongo-db-compatibility>` 
+   with |onprem| before upgrading to |onprem| 8.0.
 

source/reference/mongodb-compatibility.txt

@@ -1,3 +1,5 @@
+.. _mongo-db-compatibility:
+
 ============================
 MongoDB Compatibility Matrix
 ============================

source/tutorial/resolve-pre-flight-check.txt

@@ -25,6 +25,10 @@ This tutorial outlines the steps to configure |onprem| temporarily to
 resolve the pre-flight check failure and return to :guilabel:`Local
 Mode` setting.
 
+.. |pre-flight checks| replace:: pre-flight checks
+
+.. include:: /includes/admonitions/warning/om8-manages-mdb-6-or-later.rst
+
 Change Configuration File to Allow |onprem| to Start
 ----------------------------------------------------
 

source/tutorial/upgrade-ops-manager.txt

@@ -22,6 +22,8 @@ installation.
 Upgrade Path
 ------------
 
+.. |pre-flight checks| replace:: :ref:`pre-flight checks <fix-local-mode-start-failure>`
+
 .. include:: /includes/admonitions/warning/om8-manages-mdb-6-or-later.rst
 
 .. include:: /includes/upgrade-path-onprem-upgrade.rst