docs: replace legacy line‑dot‑left‑horizontal icons with unified dot icon across docs

apps/docs/content/(01-linear-structures)/binary-search/35-search-insert-position.mdx

@@ -1,7 +1,7 @@
 ---
 title: '35. Search Insert Position'
 description: Given a sorted array of distinct integers and a target value, return the index if the target is found. If not, return the index where it would be if it were inserted in order
-icon: line-dot-left-horizontal
+icon: dot
 sidebar:
   label: 'Search Insert Position'
   badge: 'Easy'