Update config.json (#4121)

Corrected author names to match GitHub name/capitalization.

Author: BethanyG

exercises/practice/dnd-character/.approaches/config.json

@@ -10,28 +10,28 @@
       "slug": "ability-method",
       "title": "Ability Method",
       "blurb": "Use one method to generate dice rolls and return ability values.",
-      "authors": ["bethanyg"]
+      "authors": ["BethanyG"]
     },
     {
       "uuid": "5022c80c-8ca1-45e4-aa5f-d91bb3f53441",
       "slug": "dice-roll-static-method",
       "title": "Dice Roll Static Method",
       "blurb": "Use a separate static method to conduct dice rolls.",
-      "authors": ["bethanyg"]
+      "authors": ["BethanyG"]
     },
     {
       "uuid": "98af6c1d-5ab4-476d-9041-30b8f55e13eb",
       "slug": "stand-alone-dice-roll-function",
       "title": "Stand-alone Dice Roll Function",
       "blurb": "Create a dice roll function outside the Character class.",
-      "authors": ["bethanyg"]
+      "authors": ["BethanyG"]
     },
     {
       "uuid": "5dd9d9b0-bfa5-43b2-8e95-787425349fc4",
       "slug": "loop-and-setattr-in-init",
       "title": "Loop and setattr in init",
       "blurb": "Use a tuple of attributes, a loop, and setattr in init to assign ability values.",
-      "authors": ["bethanyg"]
+      "authors": ["BethanyG"]
     }
   ]
 }