Update them_dir files in test

Author: titaneric

src/theme/mod.rs

@@ -227,6 +227,8 @@ mod tests {
             "highlight.css",
             "ayu-highlight.css",
             "clipboard.min.js",
+            "iframe.html",
+            "wasm-entry.mjs",
         ];
 
         let temp = TempFileBuilder::new().prefix("mdbook-").tempdir().unwrap();

tests/init.rs

@@ -124,6 +124,8 @@ fn copy_theme() {
         "highlight.css",
         "highlight.js",
         "index.hbs",
+        "iframe.html",
+        "wasm-entry.mjs",
     ];
     let theme_dir = temp.path().join("theme");
     let mut actual: Vec<_> = walkdir::WalkDir::new(&theme_dir)