Update clash_base.yaml

Author: Delta-Kronecker

templates/clash_base.yaml

@@ -73,7 +73,7 @@ proxy-groups:
 
   - name: "Auto"
     type: url-test
-    url: http://www.gstatic.com/generate_204
+    url: https://www.gstatic.com/generate_204
     interval: 180
     tolerance: 30
     lazy: true