style: 🎨 remove empty line

Author: martonvago

template/404.qmd.jinja

@@ -14,6 +14,6 @@ Let's get you back to greener grounds.
 ![](/_extensions/seedcase-project/seedcase-theme/images/404.svg){fig-alt="An illustration of the number 404 surrounded by trees and mountains"}
 
 ## Illustration by [Storyset](https://storyset.com/web) {.appendix}
-{% else -%}
+{%- else -%}
 This page does not exist, go back to the [homepage](/index.qmd) or check the URL for typos.
 {%- endif %}