Update SECURITY.md to not display commented copyright (#6426)

Author: dyastremsky

SECURITY.md

@@ -1,3 +1,4 @@
+<!--
 # Copyright 2023, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
@@ -23,6 +24,7 @@
 # OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+-->
 
 # Report a Security Vulnerability