fix blog post image URLs

Author: byorgey

blog/2024-07-14-swarm-0.6-release.md

@@ -29,11 +29,11 @@ and a unique upgrade system.
 There are a number of new challenge scenarios included in this
 release, with example screenshots shown below.
 
-![](../gallery/beekeeping.png)
+![](/gallery/beekeeping.png)
 
-![](../gallery/fishing.png)
+![](/gallery/fishing.png)
 
-![](../gallery/dimsum.png)
+![](/gallery/dimsum.png)
 
 ## Language improvements
 
@@ -90,7 +90,7 @@ Scenario authors can define "structures"---2D configurations of entities---that
 New is the ability to recognize when the **player** has assembled one of these predefined structures, which
 can be used as a goal criteria or to trigger other events.
 
-![](../gallery/structure-recognition.png)
+![](/gallery/structure-recognition.png)
 
 Structure recognition is implemented as an efficient 2D [Aho-Corasick](https://en.wikipedia.org/wiki/Aho%E2%80%93Corasick_algorithm) matcher.
 Modification of a cell in the world triggers a scan for matches against the library of defined structures.
@@ -105,7 +105,7 @@ This has been a powerful tool for us to clean up inter-module dependencies and e
 We were also able to split off tool functionality that depends on heavyweight external packages (*e.g.* `pandoc`) without bogging down compilation of the main game.
 
 <div style="text-align:center;">
-<img src="../images/sublibrary-graph.svg" width="250">
+<img src="/images/sublibrary-graph.svg" width="250">
 </div>
 
 Refactoring into sublibraries starts by selecting a group of modules that is ostensibly self-contained, then iterating with compiler feedback to find where our boundary assumptions are incorrect. This process yields more generic code with loose coupling and high cohesion.