doc: Fix some grammar and inconsistent tags

Michael Paquier <michael@paquier.xyz>

Commit: 40ebc41576e8116b7df90d0181f1371669622ea6
Author: Michael Paquier <michael@paquier.xyz>
Date: 2023-10-23T00:58:55Z
Releases: 17.0
doc: Fix some grammar and inconsistent tags

Author: Ekaterina Kiryanova, Elena Indrupskaya, Oleg Sibiryakov, Maxim
Yablokov
Discussion: https://postgr.es/m/4c2a430b-32e2-44e2-aeca-03b7db6824e4@postgrespro.ru

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