Fix incorrect patch (35fe7dab) for KaTeX overflow in quick search

The position: relative should be applied to each search result, not on the searchResults container as a whole.

Otherwise, if there are 1-2 items (such that the total height of the quick search box is less than the max height of searchResults), then the overflow will still happen. To replicate this, you can search for "Partialbruchzerlegung Berechnung" on production data with prior commits.

Before	After