message: Fix vulkan environment variable name
diff: @@ -93,7 +93,7 @@ elseif(ENABLE_GGP)
  add_definitions(-DVK_USE_PLATFORM_GGP)
  set(VULKAN_LAYER_MODULE_PATH "${CMAKE_INSTALL_PREFIX}/lib${LIB_SUFFIX}/${LIB_SUBFOLDER_TRAIL_SLASH}librenderdoc.so")
  - set(VULKAN_ENABLE_VAR "ENABLE_RENDERDOC_VULKAN_CAPTURE")
  + set(VULKAN_ENABLE_VAR "ENABLE_VULKAN_RENDERDOC_CAPTURE")
  set(json_in ${CMAKE_CURRENT_SOURCE_DIR}/renderdoc.json)
  set(json_out ${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/renderdoc_capture.json)
  @@ -117,7 +117,7 @@ elseif(UNIX)
  endif()
  set(VULKAN_LAYER_MODULE_PATH "${CMAKE_INSTALL_PREFIX}/lib${LIB_SUFFIX}/${LIB_SUBFOLDER_TRAIL_SLASH}librenderdoc.so")
  - set(VULKAN_ENABLE_VAR "ENABLE_RENDERDOC_VULKAN_CAPTURE")
  + set(VULKAN_ENABLE_VAR "ENABLE_VULKAN_RENDERDOC_CAPTURE")
  set(json_in ${CMAKE_CURRENT_SOURCE_DIR}/renderdoc.json)
  set(json_out ${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/renderdoc_capture.json)
  