Actually apply the pre-commit fixers to the codebase.

This can be redone manually with
`pre-commit run --all`

While the pre-commit hook could be merged to run locally,
it is much cleaner to align all the files to best-practice
syntax in a single commit. It is also required for server-side
validation.

util/limit.go

@@ -2,10 +2,11 @@ package util
 
 import (
 	"errors"
-	"golang.org/x/time/rate"
 	"io"
 	"sync"
 	"time"
+
+	"golang.org/x/time/rate"
 )
 
 // ErrLimitReached is the error returned by the Limiter and LimitWriter when the predefined limit has been reached