Do not add link in parenthesis if it's the same as linked text

[`remarkExpandLinks`](https://github.com/FujoWebDev/astrolabe/blob/21781aafe366306272bc547946aa22419df8f3d5/adapters/adapter-starter/bluesky/src/remark-plugins.ts#L74) will expand a linked word with the URL next to the text.

For example:

[fujocoded](https://fujocoded.com) => fujocoded (https://fujocoded.com)

We should not expand it when the linked text is the same as the site being linked.

[https://fujocoded.com](https://fujocoded.com) => https\://fujocoded.com

Start in adapters/adapter-starter/bluesky/src/remark-plugins.ts at the remarkExpandLinks implementation around line 74. Compare the linked text with its URL before expanding the link, and verify that matching text stays unchanged while different text still includes the URL in parentheses.

Written by the indexing model from the issue text.