Prepend site url to image links as mdbook does not for some reason

example/src/f/a.md

@@ -7,3 +7,4 @@ This is a nested example
 
 
 
+![](/a/mdbook-typst-doc/525af.svg)

src/config.rs

@@ -58,6 +58,7 @@ pub struct Config<'a> {
     pub root: Option<String>,
     pub src: String,
     pub cache: String,
+    pub url: String,
     pub handlebars: Handlebars<'a>,
 }
 
@@ -83,6 +84,7 @@ impl<'a> Default for Config<'a> {
             root: None,
             src: String::new(),
             cache: String::new(),
+            url: String::new(),
             handlebars: hb,
         }
     }
@@ -120,6 +122,10 @@ impl<'a> Config<'a> {
             ..Default::default()
         };
 
+        if let Some(html_config) = config.html_config() {
+            cfg.url = html_config.site_url.unwrap_or_default() + &cfg.src;
+        }
+
         if !Path::new(&cfg.cache).exists() {
             fs::create_dir(&cfg.cache)?;
         }

src/lib.rs

@@ -170,7 +170,7 @@ impl TypstPreprocessor {
 
                             sender.send(child).unwrap();
                         }
-                        data.insert("image", format!("![]({}/{name})", &config.cache));
+                        data.insert("image", format!("![]({}/{name})", &config.url));
                     }
                     config
                         .handlebars