[DOCS] Fix small typo (#96242) (#96291)

(cherry picked from commit 32d764c)

Author: abdonpijpelink

docs/reference/search/search-your-data/knn-search.asciidoc

@@ -453,7 +453,6 @@ vector space.
 To alleviate this worry, there is a `similarity` parameter available in the `knn` clause. This value is the required
 minimum similarity for a vector to be considered a match. The `knn` search flow with this parameter is as follows:
 
-+
 --
 * Apply any user provided `filter` queries
 * Explore the vector space to get `k` vectors