Merge #10404: doc: Add logging to FinalizeNode()

Summary:
1530bfc Add logging to FinalizeNode() (Suhas Daftuar)

Tree-SHA512: 34bd950eb7830f378d069229c24122e97db68435b313f0de2c8772c2feefdc6db5f4d1f43eeade237ffe91cdef0f1cfe3232e1a37c561a65767f4527b2e2e370

Backport of Core PR10404

https://github.com/bitcoin/bitcoin/pull/10404/files

Test Plan: make check

Reviewers: #bitcoin_abc, deadalnix, Fabien

Reviewed By: #bitcoin_abc, Fabien

Differential Revision: https://reviews.bitcoinabc.org/D3284