Add durablefunc as durable function articles owner in docfx.json

Author: ggailey777

docfx.json

@@ -273,6 +273,7 @@
         "articles/azure-cache-for-redis/**/*.yml": "flang-msft",
         "articles/azure-fluid-relay/**/*.md": "GrantMeStrength",
         "articles/azure-functions/**/*.md": "ggailey777",
+        "articles/azure-functions/durable/**/*.md": "durablefunc",
         "articles/azure-functions/durable/durable-task-scheduler/**/*.md": "hhunter-ms",
         "articles/azure-government/**/*.md": "EliotSeattle",
         "articles/azure-monitor/*.md": "bwren",