documentation: add a direct link to our HOWTO guide.

dbrnz · dbrnz · commit 772d0ff0a2b2 · 2025-05-02T21:15:09.000+12:00
diff --git a/README.md b/README.md
@@ -34,3 +34,7 @@ $ pnpm start
 Maps can then be viewed at http://localhost:3000.
 
 ---
+
+## Example usage
+
+See [here](https://anatomicmaps.github.io/flatmap-viewer/documents/HowTo_Guide.html)
