docs(docs): add redirect for LeetCode 189 Rotate Array

apps/docs/redirects.ts

@@ -42,6 +42,7 @@ export default [
   { from: "/153", to: "/binary-search/find-minimum-in-rotated-sorted-array" },
   { from: "/155", to: "/stack/min-stack" },
   { from: "/167", to: "/two-pointers/two-sum-ii-input-array-is-sorted" },
+  { from: "/189", to: "/two-pointers/rotate-array" },
   { from: "/198", to: "/1d-dynamic-programming/house-robber" },
   { from: "/199", to: "/tree-bfs/binary-tree-right-side-view" },
   { from: "/200", to: "/graph-dfs/number-of-islands" },