Some links to "previous version" seem wrong

Hi all,

while browsing release notes to upgrade one installation to latest 15.7,
I noticed that while for example the release notes[1] for that version says

  Also, if you are upgrading from a version earlier than 15.6, see
  Section E.2.

and "section E.2" is indeed a link to 15.6 notes, the page related to
15.4[2] says

  Also, if you are upgrading from a version earlier than 15.1, see
  Section E.7.

Is that correct? I mean, I'd expect it to say "earlier than 15.3, see
section E.5"... The same happens on the 15.3 page[3].

Thanks and bye,
lele.

[1] https://www.postgresql.org/docs/15/release-15-7.html
[2] https://www.postgresql.org/docs/15/release-15-4.html
[3] https://www.postgresql.org/docs/15/release-15-3.html
-- 
nickname: Lele Gaifax | Quando vivrò di quello che ho pensato ieri
real: Emanuele Gaifas | comincerò ad aver paura di chi mi copia.
lele@metapensiero.it  |                 -- Fortunato Depero, 1929.