`target` is a proper name for the onion service target address and port.
This change is required for the following commit.
This is a backport of [[https://github.com/bitcoin/bitcoin/pull/19991 | core#19991]] [4/8]
https://github.com/bitcoin/bitcoin/pull/19991/commits/e3f07851f02857b4844fccb2e91070c5cd3aad4d
Depends on D10446