[llvm-profdata] Fix option description (NFC)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271710 91177308-0d34-0410-b5e6-96231b3b80d8

tools/llvm-profdata/llvm-profdata.cpp

@@ -256,7 +256,7 @@ static int merge_main(int argc, const char *argv[]) {
   cl::opt<std::string> InputFilenamesFile(
       "input-files", cl::init(""),
       cl::desc("Path to file containing newline-separated "
-               "<filename>[,<weight>] entries"));
+               "[<weight>,]<filename> entries"));
   cl::alias InputFilenamesFileA("f", cl::desc("Alias for --input-files"),
                                 cl::aliasopt(InputFilenamesFile));
   cl::opt<bool> DumpInputFileList(