docs(content): set meta display to page and improve interval documentation formatting

apps/docs/content/(01-linear-structures)/hash-table/meta.ts

@@ -1,3 +1,8 @@
 import { defineMeta } from "blume";
 
-export default defineMeta({ title: "Hash Table", order: 1, icon: "hash", display: "group" });
+export default defineMeta({
+  title: "Hash Table",
+  order: 1,
+  icon: "hash",
+  display: "page",
+});