Update _sidebar.md

Author: HybridsEgo

docs/_sidebar.md

@@ -2,7 +2,7 @@
 
   - [Halo The Master Chief Collection](#halo-the-master-chief-collection)
   - [Halo Infinite](#halo-infinite)
-  - [Halo Wars 2](#)
+  - [Halo Wars 2](#halo-wars-2)
   - [Halo 5](#halo-5)
   - [Halo Fireteam Raven](#halo-fireteam-raven)
 
@@ -22,4 +22,4 @@
 
   - [Other](#other)
     - [Halo Online](#halo-online)
-    - [ - Halo 2 Vista](#)
+    - [ - Halo 2 Vista](#)