fix: add proper space

Author: AzulGarza

docs/changelogs/v0.0.15.md

@@ -1,6 +1,7 @@
 ### Features
 
 * **Sundial foundational model**: The [Sundial model](https://github.com/thuml/Sundial) has been added to the foundational models hub. Refer to [#157](https://github.com/AzulGarza/timecopilot/pull/157) for more details.
+
     ```python
     import pandas as pd
     from timecopilot.models.foundational.sundial import Sundial