svg-maker: rendered example in the README

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011KikHkfCiC3yELbsMN8fT9

svg-maker/README.md

@@ -30,6 +30,11 @@ canvas** — so mistakes surface as text even without the preview.
 Errors carry line numbers (`card.svgd: line 7: "four" is not a
 number — rect needs: rect <x> <y> <w> <h>`).
 
+The example above, rendered (this exact file is
+[`examples/gauge.svgd`](examples/gauge.svgd) → [`examples/gauge.svg`](examples/gauge.svg)):
+
+![gauge example](examples/gauge.svg)
+
 ## The .svgd format
 
 One element per line, `#` comments, `key=value` attributes last: