docs(template): make outline rendering configurable

docs/design/util/graphics.typ

@@ -248,7 +248,7 @@
 
 // literally just for standalone display of the graphics alone
 #import "../../template.typ": conf
-#show: conf
+#show: conf.with(render-outline: false)
 #set page(width: auto, height: auto)
 
 #graph-example

docs/template.typ

@@ -56,6 +56,7 @@
 #let conf(
   title: none,
   subtitle: none,
+  render-outline: true,
   doc,
 ) = {
   set page(
@@ -134,18 +135,20 @@
   }
 
   // outline and other prelude info
-  outline(
-    indent: auto,
-    fill: line(
-      length: 100%,
-      stroke: (
-        cap: "round",
-        join: "round",
-        thickness: 0.5pt,
-        paint: luma(75%),
+  if render-outline {
+    outline(
+      indent: auto,
+      fill: line(
+        length: 100%,
+        stroke: (
+          cap: "round",
+          join: "round",
+          thickness: 0.5pt,
+          paint: luma(75%),
+        ),
       ),
-    ),
-  )
+    )
+  }
 
   // content itself
   doc