Update main.py (GoogleCloudPlatform#2472)

Author: grant

functions/tips/main.py

@@ -89,6 +89,7 @@ def scope_demo(request):
 
 
 # [START functions_tips_lazy_globals]
+# [START run_tips_global_lazy]
 # Always initialized (at cold-start)
 non_lazy_global = file_wide_computation()
 
@@ -114,6 +115,7 @@ def lazy_globals(request):
         lazy_global = function_specific_computation()
 
     return 'Lazy: {}, non-lazy: {}.'.format(lazy_global, non_lazy_global)
+# [END run_tips_global_lazy]
 # [END functions_tips_lazy_globals]