winsdk: Update runtime installer copyright to 2018

Change-Id: If27613c85c754d4a54f5afa4dd3a6976695b227e
diff --git a/windowsRuntimeInstaller/VULKANRT_LICENSE.rtf b/windowsRuntimeInstaller/VULKANRT_LICENSE.rtf
index d0ef6c3..c23139b 100644
--- a/windowsRuntimeInstaller/VULKANRT_LICENSE.rtf
+++ b/windowsRuntimeInstaller/VULKANRT_LICENSE.rtf
Binary files differ