chore(updater): rename presolver to parallelResolver

internal/provider/cyberghost/updater/servers.go

@@ -17,7 +17,7 @@ func (u *Updater) FetchServers(ctx context.Context, minServers int) (
 
 	possibleHosts := possibleServers.hostsSlice()
 	resolveSettings := parallelResolverSettings(possibleHosts)
-	hostToIPs, _, err := u.presolver.Resolve(ctx, resolveSettings)
+	hostToIPs, _, err := u.parallelResolver.Resolve(ctx, resolveSettings)
 	if err != nil {
 		return nil, err
 	}

internal/provider/cyberghost/updater/updater.go

@@ -5,11 +5,11 @@ import (
 )
 
 type Updater struct {
-	presolver common.ParallelResolver
+	parallelResolver common.ParallelResolver
 }
 
 func New(parallelResolver common.ParallelResolver) *Updater {
 	return &Updater{
-		presolver: parallelResolver,
+		parallelResolver: parallelResolver,
 	}
 }