fix: fixing bug mailgun api

Author: masb0ymas

.env.example

@@ -4,7 +4,7 @@ PORT=
 
 AXIOS_TIMEOUT=
 
-JWT_SECRET=your_secret_jwt_key
+JWT_SECRET_ACCESS_TOKEN=your_secret_jwt_key
 JWT_ACCESS_TOKEN_EXPIRED=
 
 JWT_SECRET_REFRESH_TOKEN=your_secret_jwt_key
@@ -45,8 +45,8 @@ MAIL_USERNAME=null
 MAIL_PASSWORD=null
 MAIL_ENCRYPTION=null
 
-MAILGUN_API_KEY=null
-MAILGUN_DOMAIN=null
+MAILGUN_API_KEY=
+MAILGUN_DOMAIN=
 
 OAUTH_CLIENT_ID=
 OAUTH_CLIENT_SECRET=