[3.14] doc: Clarify logger creation example in logging HOWTO (GH-145540) (GH-145562)

doc: Clarify logger creation example in logging HOWTO (GH-145540)
(cherry picked from commit e0945443a0abdee56a51a5cb82a31edba5f1adab)

Co-authored-by: Yash Kaushik <yash005kaushik@gmail.com>