Fix pub tests that print run or global run usage.

test/global/run/missing_executable_arg_test.dart

Index: test/global/run/missing_executable_arg_test.dart
diff --git a/test/global/run/missing_executable_arg_test.dart b/test/global/run/missing_executable_arg_test.dart
index cfb8c397c2f7b534d91b89f5820acb4b6ee554b8..8b5fb41124b8667e20661bab648b7a5bf41d05cb 100644
--- a/test/global/run/missing_executable_arg_test.dart
+++ b/test/global/run/missing_executable_arg_test.dart
@@ -13,9 +13,10 @@ main() {
             Must specify an executable to run.
 
             Usage: pub global run <package>:<executable> [args...]
-            -h, --help    Print this usage information.
-                --mode    Mode to run transformers in.
-                          (defaults to "release")
+            -h, --help            Print this usage information.
+            -c, --[no-]checked    Enable runtime type checks and assertions.
+                --mode            Mode to run transformers in.
+                                  (defaults to "release")
 
             Run "pub help" to see global options.
             """,