Updated GitHub description and homepage URL to be https (apache#7019)

.asf.yaml

@@ -4,6 +4,24 @@ notifications:
   issues: [email protected]
   pullrequests: [email protected]
 github:
+  description: "Apache Traffic Server™ is a fast, scalable and extensible HTTP/1.1 and HTTP/2 compliant caching proxy server."
+  homepage: https://trafficserver.apache.org/
+  labels:
+    - proxy
+    - cdn
+    - cache
+    - apache
+  features:
+    # Enable wiki for documentation
+    wiki: false
+    # Enable issue management
+    issues: true
+    # Enable projects for project management boards
+    projects: true
   enabled_merge_buttons:
-    # enable squash button:
-    squash:  true
+    # Enable squash button:
+    squash: true
+    # Disable rebase button:
+    rebase: false
+    # Disable merge button:
+    merge: false