Added labels to .asf.yaml (#257)

diff --git a/.asf.yaml b/.asf.yaml
index 1900eb1..0219e82 100644
--- a/.asf.yaml
+++ b/.asf.yaml
@@ -20,6 +20,10 @@
 github:
   description: "Apache Airflow Website"
   homepage: https://airflow.apache.org/
+  labels:
+    - apache
+    - airflow
+    - hugo
 
   enabled_merge_buttons:
     squash: true