Update image links to use markdown syntax

Co-authored-by: Ben Lambert <ben@blam.sh>
Co-authored-by: Fredrik Adelöw <freben@users.noreply.github.com>
Signed-off-by: Johan Haals <johan.haals@gmail.com>

docs/features/search/architecture.md

@@ -9,7 +9,9 @@ to support a wide variety of search engines, while providing a simple developer
 experience for plugin developers, and a good out-of-the-box experience for
 Backstage end-users.
 
-<img data-zoomable src="../../assets/search/architecture.drawio.svg" alt="Search Architecture" />
+<!-- todo: Needs zoomable plugin -->
+
+![Search Architecture](../../assets/search/architecture.drawio.svg)
 
 At a base-level, we want to support the following: