Bug#1106404: release-notes: 4.2.1. title states 'to' instead of 'from'

[Juan Díaz Lazcano]

Package: release-notes
Severity: minor

The title of section 4.2.1 is inconsistent with section 4.2.

   4.2     Upgrades from Debian 12 (bookworm)
   4.2.1.  Upgrade to Debian 12 (bookworm)

The use of 'to' is misleading, inconsistent, and thus confusing.