[backport#17648] doc: rename wallet-tool references to bitcoin-wallet

Summary:
e7ad4a2f8c07a82d6424b473f0d51dbd8f897b10 doc: rename wallet-tool references to bitcoin-wallet (Wilson Ccasihue S)

Pull request description:

Fix. text reference to executable bitcoin-wallet instead of wallet-tool, there is not a wallet-tool at bin/ folder.

Backport of Core PR17648

Test Plan:

ninja check check-functional

Reviewers: #bitcoin_abc, jasonbcox

Reviewed By: #bitcoin_abc, jasonbcox

Differential Revision: https://reviews.bitcoinabc.org/D7693