Change root_path to static_root_path

Co-authored-by: Guillaume Gomez <guillaume1.gomez@gmail.com>

src/librustdoc/html/layout.rs

@@ -114,7 +114,7 @@ crate fn render<T: Print, S: Print>(
     {after_content}\
     <div id=\"rustdoc-vars\" data-root-path=\"{root_path}\" data-current-crate=\"{krate}\" \
        data-search-index-js=\"{root_path}search-index{suffix}.js\" \
-       data-search-js=\"{root_path}search{suffix}.js\"></div>
+       data-search-js=\"{static_root_path}search{suffix}.js\"></div>
     <script src=\"{static_root_path}main{suffix}.js\"></script>\
     {extra_scripts}\
 </body>\