fix: correct typo in Gitea SMTP port configuration

- Corrected a typo in the Gitea SMTP port configuration
- across multiple files: `gitea.vsh`, `gitea_model.v`,
- `server.v`, and `app.ini`.  The incorrect `smpt_port`
- was changed to the correct `smtp_port`.

Co-authored-by: mariobassem12 <mariobassem12@gmail.com>

examples/installers/gitea.vsh

@@ -13,7 +13,7 @@ heroscript := "
 	mail_from: 'git@meet.tf'
 	smtp_addr: 'smtp-relay.brevo.com'
 	smtp_login: 'admin'
-	smpt_port: 587
+	smtp_port: 587
 	smtp_passwd: '12345678'
 	domain: 'meet.tf'
 	jwt_secret: ''