Fix help and error messages.

tools/gn/command_desc.cc

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <algorithm>
 #include <set>
 #include <sstream>
 
 #include "base/command_line.h"
 #include "tools/gn/commands.h"
@@ skipping 270 matching lines @@
     "      Used with any value specified by a config, this will name\n"
     "      the config that specified the value. This doesn't currently work\n"
     "      for libs and lib_dirs because those are inherited and are more\n"
     "      complicated to figure out the blame (patches welcome).\n"
     "\n"
     "Note:\n"
     "  This command will show the full name of directories and source files,\n"
     "  but when directories and source paths are written to the build file,\n"
     "  they will be adjusted to be relative to the build directory. So the\n"
     "  values for paths displayed by this command won't match (but should\n"
-    "  mean the same thing.\n"
+    "  mean the same thing).\n"
     "\n"
     "Examples:\n"
     "  gn desc //base:base\n"
     "      Summarizes the given target.\n"
     "\n"
     "  gn desc :base_unittests deps --tree\n"
     "      Shows a dependency tree of the \"base_unittests\" project in\n"
     "      the current directory.\n"
     "\n"
     "  gn desc //base defines --blame\n"
@@ skipping 78 matching lines @@
   OUTPUT_CONFIG_VALUE(ldflags, std::string)
   PrintLibs(target, true);
   PrintLibDirs(target, true);
 
   PrintDeps(target, true);
 
   return 0;
 }
 
 }  // namespace commands