[IMP] accounting: update bank synchronization page

[fw-bot]

task-4981233

Forward-Port-Of: #14782

[robodoo]

[fw-bot]

@afma-odoo @auva-odoo cherrypicking of pull request #14782 failed.

stdout:

Auto-merging content/applications/finance/accounting/bank/reconciliation.rst
CONFLICT (content): Merge conflict in content/applications/finance/accounting/bank/reconciliation.rst
Auto-merging redirects/18.0.txt

Either perform the forward-port manually (and push to this branch, proceeding as usual) or close this PR (maybe?).

In the former case, you may want to edit this PR message as well.

⚠️ after resolving this conflict, you will need to merge it via @robodoo.

More info at https://github.com/odoo/odoo/wiki/Mergebot#forward-port

[fw-bot]

@afma-odoo @auva-odoo this forward port of #14782 is awaiting action (not merged or closed).