style: format code with Gofumpt and Prettier

This commit fixes the style issues introduced in b81c776 according to the output
from Gofumpt and Prettier.

Details: #2579

pkg/index/job/correction/service/corrector.go

@@ -137,7 +137,7 @@ func (c *correct) Start(ctx context.Context) (err error) {
 	}
 	counts := detail.GetCounts()
 	agents := make([]string, 0, len(counts))
-	for agent:= range counts {
+	for agent := range counts {
 		agents = append(agents, agent)
 	}
 	slices.SortFunc(agents, func(left, right string) int {