Correct typo in error string (#2902)

cmd/signature-jwt.go

@@ -44,7 +44,7 @@ const (
 // newJWT - returns new JWT object.
 func newJWT(expiry time.Duration) (*JWT, error) {
 	if serverConfig == nil {
-		return nil, errors.New("Server not initialzed")
+		return nil, errors.New("Server not initialized")
 	}
 
 	// Save access, secret keys.

cmd/signature-jwt_test.go

@@ -72,11 +72,11 @@ func TestNewJWT(t *testing.T) {
 		expectedErr error
 	}{
 		// Test non-existent config directory.
-		{path.Join(path1, "non-existent-dir"), false, nil, fmt.Errorf("Server not initialzed")},
+		{path.Join(path1, "non-existent-dir"), false, nil, fmt.Errorf("Server not initialized")},
 		// Test empty config directory.
-		{path2, false, nil, fmt.Errorf("Server not initialzed")},
+		{path2, false, nil, fmt.Errorf("Server not initialized")},
 		// Test empty config file.
-		{path3, false, nil, fmt.Errorf("Server not initialzed")},
+		{path3, false, nil, fmt.Errorf("Server not initialized")},
 		// Test initialized config file.
 		{path4, true, nil, nil},
 		// Test to read already created config file.