[BUG] require-img-alt should allow empty value

[duhem-s]

Describe the bug

The require-img-alt rule incorrectly flags empty alt attributes (alt="") as invalid. According to accessibility guidelines (WCAG 2.1 SC 1.1.1 and RGAA 4.1 Criterion 1.1), an empty alt is the recommended approach for decorative images (e.g., icons, spacers, or purely visual elements).

• WCAG 1.1.1
• RGAA 1.1

To Reproduce

Feedback is based on documentation : https://html-eslint.org/docs/rules/require-img-alt

Expected behavior

The rule should not report errors for alt="".

Additional context

Empty alt attributes ensure screen readers skip decorative images, improving UX for assistive tech users.

[duhem-s]

Checked the code and tested on a personal project, it allows empty alt attribute.

I updated the doc.

[yeonjuan]

Thank you. As you mentioned, the document example is incorrect.
https://html-eslint.org/playground#eyJjb2RlIjoiPGltZyBhbHQ9XCJcIj5cbjxpbWcgPlxuIiwiY29uZmlnIjp7InJ1bGVzIjp7IkBodG1sLWVzbGludC9yZXF1aXJlLWltZy1hbHQiOiJlcnJvciJ9fSwibGFuZ3VhZ2UiOiJodG1sIn0=