Broken GitHub links

[vanjmali]

Some pages contain missing links to demos that have either moved or are missing

• https://wiki.minestom.net/feature/map-rendering/glfwmaprendering#continuous-rendering
  For more in-depth examples, look at the demo package.
• https://wiki.minestom.net/feature/map-rendering/glfwmaprendering#color-mapping
  As said in the Map Rendering article, maps do not use RGB,...
• https://wiki.minestom.net/feature/map-rendering/glfwmaprendering#automatic-post-processing-conversion
  This renderer works by rendering your content inside an OpenGL framebuffer (see MapColorRenderer constructor for more control over the framebuffer format.
• https://wiki.minestom.net/world/chunk-generator
  Example found here
• https://wiki.minestom.net/world/instances#instancecontainer
  without it no chunk can be generated. (check here to make your own)

[lunasoldev]

Working on it rn

[lunasoldev]

I sent a pull request, which should fix the issue