use correct architecture reference

Colby Swandale · Colby Swandale · commit 547be502d3dd · 2022-01-13T00:00:06.000+11:00
diff --git a/template.yaml b/template.yaml
@@ -7,7 +7,7 @@ Globals:
     Timeout: 10
     MemorySize: 512
     Architectures:
-      - amd64
+      - x86_64
   Api:
     EndpointConfiguration: REGIONAL
     Auth:
