Add linter 'gofumpt'

.golangci.yml

@@ -3,6 +3,7 @@ linters:
   enable:
     - errcheck
     - godot
+    - gofumpt
     - goimports
     - gosimple
     - govet
@@ -19,6 +20,8 @@ linters:
 linters-settings:
   goimports:
     local-prefixes: github.com/xorcare/testing-go-code-with-postgres
+  gofumpt:
+    module-path: github.com/xorcare/testing-go-code-with-postgres
   unused:
     field-writes-are-uses: false
     post-statements-are-reads: true

user_repository.go

@@ -51,7 +51,6 @@ func (r *UserRepository) CreateUser(ctx context.Context, user User) error {
 		user.Username,
 		user.CreatedAt,
 	)
-
 	if err != nil {
 		const format = "failed insertion of User to database: %v"
 		return fmt.Errorf(format, err)