fix: prefer V2 Discovery URI format

v2 is now preferred

googleapiclient/discovery.py

diff --git a/googleapiclient/discovery.py b/googleapiclient/discovery.py
index 55367c0..9d7d102 100644
--- a/googleapiclient/discovery.py
+++ b/googleapiclient/discovery.py
@@ -238,7 +238,7 @@
     else:
         discovery_http = http
 
-    for discovery_url in (discoveryServiceUrl, V2_DISCOVERY_URI):
+    for discovery_url in (V2_DISCOVERY_URI, discoveryServiceUrl):
         requested_url = uritemplate.expand(discovery_url, params)
 
         try: