Fix attributions, as per Chris' suggestions.

Author: CartBlanche

website/_data/resources.json

@@ -90,7 +90,7 @@
     {
         "name": "l1",
         "title": "MonoGame.Extended",
-        "author": "Christopher Whitley (AristurtleDev)",
+        "author": "Craftworkgames and contributors",
         "cover": "https://www.monogameextended.net/img/logo.png",
         "url": "https://www.monogameextended.net/",
         "pixelart": false,
@@ -101,7 +101,7 @@
     {
         "name": "l2",
         "title": "Gum",
-        "author": "Christopher Whitley (AristurtleDev)",
+        "author": "Victor Chelaru",
         "cover": "https://docs.flatredball.com/~gitbook/image?url=https%3A%2F%2F3900811371-files.gitbook.io%2F%7E%2Ffiles%2Fv0%2Fb%2Fgitbook-x-prod.appspot.com%2Fo%2Forganizations%252F-M_fyYVTQKWSV65sXTSp%252Fsites%252Fsite_3hxze%252Flogo%252Fo54By5G58RWuAHsltTBS%252Fgum-logo-reverse-512.png%3Falt%3Dmedia%26token%3D54198098-3f7d-40ff-a442-1a28a2fbbca9&width=260&dpr=2&quality=100&sign=55148268&sv=2",
         "url": "https://docs.flatredball.com/gum",
         "pixelart": false,