docs: add test snapshot (#8435)

reggi · wraithgar · web-flow · commit ef3529ec4b45 · 2025-07-15T15:40:01.000-04:00
Co-authored-by: Gar &lt;gar+gh@danger.computer&gt;
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
@@ -68,7 +68,10 @@ Use:
 ```bash
 node . exec -- <package>
 ```
-
+To update the snapshots run:
+```bash
+TAP_SNAPSHOT=1 npm test
+```
 
 ## Performance & Benchmarks
 
