Fix number of * in VNDK ABI output.

Test: pass
Change-Id: If909ca6f4429cd25a4a0dd1e40ee090a2b7f985e
diff --git a/vndk/tools/header-checker/merge-abi-diff/src/merge_abi_diff.cpp b/vndk/tools/header-checker/merge-abi-diff/src/merge_abi_diff.cpp
index c83fd9f..7e884de 100644
--- a/vndk/tools/header-checker/merge-abi-diff/src/merge_abi_diff.cpp
+++ b/vndk/tools/header-checker/merge-abi-diff/src/merge_abi_diff.cpp
@@ -141,7 +141,7 @@
                  << ":"
                  << " Please check compatiblity report at : "
                  << merged_diff_report << "\n"
-                 << "*****************************************************\n";
+                 << "******************************************************\n";
   }
 
   if (do_not_break_on_extensions &&