chore: hide spec assets folder (#1280)

## This PR

- hides spec assets from the docs

### Notes

Prevents assets from showing up in the docs.

<img width="384" height="720" alt="image"
src="https://github.com/user-attachments/assets/16b9ef74-562c-4b3e-86b3-7dfaa1bc25c7"
/>

Signed-off-by: Michael Beemer <beeme1mr@users.noreply.github.com>

Author: beeme1mr

docusaurus.config.ts

@@ -335,6 +335,7 @@ const config: Config = {
         },
         rehypePlugins: [rehypeGithubAlerts],
         remarkPlugins: [remarkGfm],
+        exclude: ['assets/**'],
         // ... other options
       },
     ],