Update testing.qmd

MarionBWeinzierl · web-flow · commit db99ebae0689 · 2026-05-08T16:16:34.000+01:00
diff --git a/src/testing.qmd b/src/testing.qmd
@@ -13,7 +13,7 @@
 
 - Tests are your "reproducibility insurance"
 - Flags (hopefully) when something is dodgy in your codebase
-    - Find the problems before someone else does...
+    - Find the problems before someone else does!
 - Improve reliability and trustworthyness
 
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