feats: alerts now accept markdown

[Meng-Heng]

I could not get the block-level elements to render in Parsedown, therefore, this is the only line I would like to change for now.

I'll keep working to improve this in the background because I know it is solvable but I need more time.

This PR is ready for review.
@keymanapp-test-bot skip

[keymanapp-test-bot]

User Test Results

Test specification and instructions

User tests are not required

[Meng-Heng]

Since our usage on the websites is mostly text decoration, I think this small change will be most needed than the block-level elements.

> [!CAUTION]
> **TEST**
> #### Heading
> - List
> - List 2
> [Google](www.google.com)
> _Test_ 
> ![Image 1](./assets/kb0009/properties.jpg)

Outcome