Update src/librustdoc/html/render/search_index.rs

Co-authored-by: Guillaume Gomez <[email protected]>

Author: notriddle

src/librustdoc/html/render/search_index.rs

@@ -535,7 +535,7 @@ pub(crate) fn build_index<'tcx>(
         desc.iter().map(|(len, _)| *len).sum::<usize>() + emptydesc.len()
     );
 
-    // The index, which is actually used to search, is JSON
+    // The index, which is actually used to search, is JSON.
     // It uses `JSON.parse(..)` to actually load, since JSON
     // parses faster than the full JavaScript syntax.
     let index = format!(