6ad47b04b9 trivial: Fix relevent typo (practicalswift)
Pull request description:
Fix relevent typo.
Tree-SHA512: 29247a780ab2caf0180c3558632a00068b02b4de4a56825f425c66a1e515542ab1e5268971ffa9a63e46840504101b5e6a5f8dcb6070522ac3f5ca90a28262b9
Backport of Core PR13052
https://github.com/bitcoin/bitcoin/pull/13052/files