test(examples): use shared slhx render helper

Remove remaining example-local render_html wrappers in favor of slhx::render_html so public examples share the hemplate render_into effect boundary.

req: view/001

req: html_safety/002

examples/v0/src/main.rs

@@ -214,11 +214,7 @@ fn render_page_swap(title: &'static str, message: &'static str) -> String {
 
 fn render_docs_content(message: &'static str) -> SafeHtml {
     // req: html_safety/002 req: view/001
-    render_html(&DocsContent { message })
-}
-
-fn render_html(template: &impl Hemplate) -> SafeHtml {
-    SafeHtml::trusted(render_template(template))
+    slhx::render_html(&DocsContent { message })
 }
 
 fn render_template(template: &impl Hemplate) -> String {