fix: Content visibility in dropdown

Description

The current dropdown menu on the About page in mobile view has a visibility issue. Some of the content is being cut off and is not scrollable horizontally, resulting in an incomplete user experience. ref: https://nodejs.org/en/learn/getting-started/introduction-to-nodejs

Validation

before:

after:

Check List

[x] I have read the Contributing Guidelines and made commit messages that follow the guideline.
[x] I have run npm run format to ensure the code follows the style guide.
[x] I have run npm run test to check if all tests are passing.
[x] I have run npx turbo build to check if the website builds without errors.
[ ] I've covered new added functionality with unit tests if necessary.

nodejs / nodejs.org

fix: Content visibility in dropdown #6827

Description

Validation

Check List