IVGCVSW-7024 Add missing license info for reuse lint

Signed-off-by: Jim Flynn <jim.flynn@arm.com>
Change-Id: I97dee6982e0a7be01c13e9e803c0997547a39ff1
diff --git a/python/pyarmnn/docs_conf/config.mako b/python/pyarmnn/docs_conf/config.mako
index b26003b..0b5592d 100644
--- a/python/pyarmnn/docs_conf/config.mako
+++ b/python/pyarmnn/docs_conf/config.mako
@@ -1,3 +1,7 @@
+##
+## Copyright © 2020 Arm Ltd and Contributors. All rights reserved.
+## SPDX-License-Identifier: MIT
+##
 <%!
     # Template configuration. Copy over in your template directory
     # (used with --template-dir) and adapt as required.