Double Check Devise Mailer Configuration's Sender Email Address

[coderabbitai]

It's been noted that the sender email address in the Devise mailer configuration is currently set to a placeholder. This issue is to remind us to double-check and update this setting to a valid email address that we can control, even in a development environment. This is to ensure that any email functionalities are accurately tested during development.

Related PR: #11
Comment: #11 (comment)

@Alejandroq12, please review and update this configuration as necessary.