Fixed error message

The product is now named bazel and that's the binary people have installed.

--
Reviewed-on: https://github.com/bazelbuild/bazel/pull/737
MOS_MIGRATED_REVID=111071899

src/main/cpp/blaze_startup_options_common.cc

diff --git a/src/main/cpp/blaze_startup_options_common.cc b/src/main/cpp/blaze_startup_options_common.cc
index ec9d431..2cbab03 100644
--- a/src/main/cpp/blaze_startup_options_common.cc
+++ b/src/main/cpp/blaze_startup_options_common.cc
@@ -263,9 +263,10 @@
     }
     if (!extra_argument_processed) {
       blaze_util::StringPrintf(
-          error, "Unknown %s startup option: '%s'.\n"
-          "  For more info, run 'blaze help startup_options'.",
-          GetProductName().c_str(), arg);
+          error,
+          "Unknown %s startup option: '%s'.\n"
+          "  For more info, run '%s help startup_options'.",
+          GetProductName().c_str(), arg, GetProductName().c_str());
       return blaze_exit_code::BAD_ARGV;
     }
   }