fix(docs): missing line breaks in why-base page cause text to run together

[ichaichai]

Page: https://docs.base.org/base-chain/quickstart/why-base
File: docs/base-chain/quickstart/why-base.mdx

Description

Two bullet points in the body text are missing a line break, causing them to run into the next paragraph.

First occurrence – "A platform for building innovative apps" section:

• Accept payments from anyone, easilyIt's fast, cheap, and permissionless...

Second occurrence – "Expansive developer tools" section:

• Robust developer toolingBut there's more: ...

Expected behavior

Each bullet point should end before the following sentence begins, e.g.:

- Accept payments from anyone, easily

It's fast, cheap, and permissionless...

Steps to reproduce

1. Visit https://docs.base.org/base-chain/quickstart/why-base
2. Look at the bullet list under "A platform for building innovative apps"
3. The last bullet item runs directly into the next paragraph without a line break

Suggested fix

Add a blank line (or move the continuation text outside the list block) after each affected bullet item in the MDX source.