Fixup docs. (#23906)

docs/ChangeLog/20240526.md

@@ -111,7 +111,7 @@ Compliance checks were run against QMK firmwares for the most popular ARM microc
 
 ## Deprecation Notices
 
-In line with the [notice period](support_deprecation_policy#how-much-advance-notice-will-be-given), deprecation notices for larger items are listed here.
+In line with the [notice period](../support_deprecation_policy#how-much-advance-notice-will-be-given), deprecation notices for larger items are listed here.
 
 ### Migration of VIA keymaps to VIA team control
 

docs/_sidebar.json

@@ -212,7 +212,8 @@
                         "text": "Most Recent ChangeLog",
                         "link": "/ChangeLog/20240526"
                     },
-                    { "text": "Past Breaking Changes", "link": "/breaking_changes_history" }
+                    { "text": "Past Breaking Changes", "link": "/breaking_changes_history" },
+                    { "text": "Deprecation Policy", "link": "/support_deprecation_policy" }
                 ]
             },