Update milli/src/search/criteria/attribute.rs

Co-authored-by: Clément Renault <clement@meilisearch.com>

milli/src/search/criteria/attribute.rs

@@ -193,7 +193,7 @@ impl<'t, 'q> WordLevelIterator<'t, 'q> {
     ) -> heed::Result<Option<Self>> {
         match ctx.word_position_last_level(&word, in_prefix_cache)? {
             Some(_) => {
-                // HOTFIX Meilisearch#1707: it is better to only iterate over the level 0.
+                // HOTFIX Meilisearch#1707: it is better to only iterate over level 0 for performances reasons.
                 let level = TreeLevel::min_value();
                 let interval_size = LEVEL_EXPONENTIATION_BASE.pow(Into::<u8>::into(level) as u32);
                 let inner =