faq: split up upgrade section into major and point release upgrades

Makes the difference stand out better, much like we do it in the PVE
docs too.

Signed-off-by: Christoph Heiss <c.heiss@proxmox.com>

pmg-faq.adoc

@@ -51,11 +51,15 @@ NOTE: {pmg} releases before 5.0 are not listed here. As they are all EOL (End
 Of Life), it's highly recommended to upgrade to a newer version, if still in use.
 
 [[faq-upgrade]]
-How can I upgrade {pmg} to the next release?::
+How can I upgrade {pmg} to the next point release?::
 
 Minor version upgrades, for example, upgrading from {pmg} version 5.1
-to 5.2, can be done just like any normal update, either through the
-__Node -> Updates__ panel or through the command line with:
+to 5.2, can be done just like any normal update. But you should still check the
+https://pmg.proxmox.com/wiki/index.php/Roadmap[release notes] for any relevant
+notable, or breaking change.
++
+For the update itself use either through the __Node -> Updates__ panel or
+through the command line with:
 +
 ----
 apt update
@@ -65,13 +69,18 @@ apt full-upgrade
 NOTE: Always ensure that you correctly set up the
 xref:pmg_package_repositories[package repositories], and only continue with the
 actual upgrade if `apt update` did not hit any errors.
-+
+
+[[faq-major-upgrade]]
+How can I upgrade {pmg} to the next major release?::
+
 Major version upgrades, for example, going from {pmg} 5.4 to 6.0, are
 also supported. They must be carefully planned and tested, and should
 *never* be started without having an up-to-date backup ready.
++
 Although the specific upgrade steps depend on your respective setup, we
 provide general instructions and advice on how an upgrade should be
 performed:
 +
 * https://pmg.proxmox.com/wiki/index.php/Upgrade_from_6.x_to_7.0[Upgrade from {pmg} 6.x to 7.0]
+
 * https://pmg.proxmox.com/wiki/index.php/Upgrade_from_5.x_to_6.0[Upgrade from {pmg} 5.x to 6.0]