Update Vulkan guide link (fixes #405)

Author: Overv

config.json

@@ -21,7 +21,7 @@
             "Support the website": "https://www.paypal.me/AOvervoorde",
             "Vulkan Specification": "https://www.khronos.org/registry/vulkan/specs/1.3-extensions/html/",
             "LunarG Vulkan SDK": "https://lunarg.com/vulkan-sdk/",
-            "Vulkan Guide": "https://github.com/KhronosGroup/Vulkan-Guide",
+            "Vulkan Guide": "https://docs.vulkan.org/guide/latest/",
             "Vulkan Hardware Database": "https://vulkan.gpuinfo.org/",
             "Rust code": "https://github.com/bwasty/vulkan-tutorial-rs",
             "Java code": "https://github.com/Naitsirc98/Vulkan-Tutorial-Java",