[vulkan-headers] add git url (#2538)

packages/v/vulkan-headers/xmake.lua

@@ -4,8 +4,9 @@ package("vulkan-headers")
     set_description("Vulkan Header files and API registry")
     set_license("Apache-2.0")
 
+    add_urls("https://github.com/KhronosGroup/Vulkan-Headers.git")
     add_urls("https://github.com/KhronosGroup/Vulkan-Headers/archive/$(version).tar.gz", {version = function (version) return version:startswith("v") and version or "sdk-" .. version:gsub("%+", ".") end})
-    
+
     -- when adding a new sdk version, please also update vulkan-loader, spirv-headers, glslang and volk packages
     add_versions("1.3.250+1", "e5b563a415e73725bcf471b7e3e837804ed3703b47cce4553db5e7e73821c5ee")
     add_versions("1.3.246+1", "f9fa6a05ac1e059cd6f8f3a21705fb5bc093743d97315b7acf3bc20921abc27c")