Update breadcrumb path from toc.yml to toc.json

Author: huypub

agent-framework/docfx.json

@@ -45,7 +45,7 @@
       "zone_pivot_group_filename:": "zone_pivot_group.json",
       "uhfHeaderId": "MSDocsHeader-AgentFramework",
       "layout": "Conceptual",
-      "breadcrumb_path": "/agent-framework/breadcrumb/agent-framework/toc.yml",
+      "breadcrumb_path": "/agent-framework/breadcrumb/agent-framework/toc.json",
       "feedback_system": "Standard",
       "permissioned-type": "public"
     },