Fixing more spelling errors (#16926)

## Summary

Here I fix the last English spelling errors I could find in the repo.

Again, I am trying not to touch variable/function names, or anything
that might be misspelled in the API. The goal is to make this PR safe
and easy to merge.

## Test Plan

I have run all the unit tests. Though, again, all of the changes I make
here are to docs and docstrings. I make no code changes, which I believe
should greatly mitigate the testing concerns.

crates/ruff_linter/src/rules/pyflakes/mod.rs

@@ -3124,7 +3124,7 @@ lambda: fu
 
     #[test]
     fn redefined_by_gen_exp() {
-        // Re-using a global name as the loop variable for a generator
+        // Reusing a global name as the loop variable for a generator
         // expression results in a redefinition warning.
         flakes(
             "import fu; (1 for fu in range(1))",