Should flag when people mix up "straight" and "strait" (or their plurals)

I just read a comment on the Internet referring to "Straights of Hormuz".

There are two problems:
1. "straight" means "not bent", "strait" is a body of water
2. Most bodies of water, including Hormuz use the singular "Strait" but a few use the plural "Straits", or both, like the Strait(s) of Magellan

We should at least correct "straight" and "straights" to "strait" when it's referring to a body of water.
We could also maintain a curated list of which ones use singular vs plural.

That's easy when the mistake is part of a proper noun, but will be harder in cases like "looking out across the straight".

The issue names no files, tests, or entry points. Start by locating the existing spelling and proper-noun rule implementation and its tests; completion should cover singular and plural waterway names while avoiding corrections when “straight” means “not bent.”

Written by the indexing model from the issue text.