Updated llvm-cov's OVERVIEW description

llvm-svn: 193732
diff --git a/llvm/tools/llvm-cov/llvm-cov.cpp b/llvm/tools/llvm-cov/llvm-cov.cpp
index 26aec46..4a69c71 100644
--- a/llvm/tools/llvm-cov/llvm-cov.cpp
+++ b/llvm/tools/llvm-cov/llvm-cov.cpp
@@ -38,7 +38,7 @@
   PrettyStackTraceProgram X(argc, argv);
   llvm_shutdown_obj Y;  // Call llvm_shutdown() on exit.
 
-  cl::ParseCommandLineOptions(argc, argv, "llvm cov\n");
+  cl::ParseCommandLineOptions(argc, argv, "llvm coverage tool\n");
 
   GCOVFile GF;
   if (InputGCNO.empty())