Notes update from logseq

Author: VR-Rathod

CONTRIBUTING.md

@@ -35,6 +35,7 @@ Every page **must** start with SEO frontmatter:
 seoTitle: <Page Name> Complete Guide – <Short Description>
 description: "Comprehensive <topic> reference covering <key topics>."
 keywords: "<keyword1>, <keyword2>, ..., VR-Rathod, Code-Note, code note vr, vr book , <You'r name / your code tags>"
+displayTitle: C++  # This is title of page (not required for  all page)
 ---
 ```
 

pages/binary-indexed-tree-fenwick-tree.md …s/Binary Indexed Tree or Fenwick Tree.mdpages/binary-indexed-tree-fenwick-tree.md renamed to pages/Binary Indexed Tree or Fenwick Tree.md pages/binary-indexed-tree-fenwick-tree.md renamed to pages/Binary Indexed Tree or Fenwick Tree.md

@@ -2,6 +2,7 @@
 seoTitle: Fenwick Tree (Binary Indexed Tree) – Prefix Sum Data Structure
 description: "Fenwick trees support prefix sum queries and point updates in O(log n). Covers BIT construction, update and query operations, 2D BIT, and range update."
 keywords: "Fenwick tree, binary indexed tree, BIT, prefix sum, point update, O(log n), range query, 2D BIT, time complexity, space complexity, data structure"
+displayTitle: Binary Indexed Tree or Fenwick Tree
 ---
 
 - Explanation: