Update comment on search.js static file.

Author: jsha

src/librustdoc/html/static_files.rs

@@ -24,8 +24,7 @@ crate static NORMALIZE_CSS: &str = include_str!("static/normalize.css");
 /// including search behavior and docblock folding, among others.
 crate static MAIN_JS: &str = include_str!("static/main.js");
 
-/// The file contents of `search-index.js`, which contains the search behavior,
-/// and into which is interpolated the search index.
+/// The file contents of `search.js`, which contains the search behavior.
 crate static SEARCH_JS: &str = include_str!("static/search.js");
 
 /// The file contents of `settings.js`, which contains the JavaScript used to handle the settings