chore: use gofumpt for code formatting

internal/provider/nordvpn/updater/api.go

@@ -8,12 +8,11 @@ import (
 	"net/http"
 )
 
-var (
-	ErrHTTPStatusCodeNotOK = errors.New("HTTP status code not OK")
-)
+var ErrHTTPStatusCodeNotOK = errors.New("HTTP status code not OK")
 
 func fetchAPI(ctx context.Context, client *http.Client,
-	limit uint) (data serversData, err error) {
+	limit uint,
+) (data serversData, err error) {
 	url := "https://api.nordvpn.com/v2/servers"
 	url += fmt.Sprintf("?limit=%d", limit) // 0 means no limit
 

internal/provider/nordvpn/updater/models.go

@@ -175,7 +175,8 @@ var (
 
 // wireguardPublicKey returns the Wireguard public key for the server.
 func (s *serverData) wireguardPublicKey(technologies map[uint32]technologyData) (
-	wgPubKey string, err error) {
+	wgPubKey string, err error,
+) {
 	for _, technology := range s.Technologies {
 		data, ok := technologies[technology.ID]
 		if !ok || data.Identifier != "wireguard_udp" {

internal/provider/nordvpn/updater/servers.go

@@ -11,12 +11,11 @@ import (
 	"github.com/qdm12/gluetun/internal/provider/common"
 )
 
-var (
-	ErrNotIPv4 = errors.New("IP address is not IPv4")
-)
+var ErrNotIPv4 = errors.New("IP address is not IPv4")
 
 func (u *Updater) FetchServers(ctx context.Context, minServers int) (
-	servers []models.Server, err error) {
+	servers []models.Server, err error,
+) {
 	const limit = 0
 	data, err := fetchAPI(ctx, u.client, limit)
 	if err != nil {
@@ -47,7 +46,8 @@ func (u *Updater) FetchServers(ctx context.Context, minServers int) (
 func extractServers(jsonServer serverData, groups map[uint32]groupData,
 	services map[uint32]serviceData, locations map[uint32]locationData,
 	technologies map[uint32]technologyData) (servers []models.Server,
-	warnings []string) {
+	warnings []string,
+) {
 	ignoreReason := ""
 	switch {
 	case jsonServer.Status != "online":