chore(config): remove trailing comma in appsettings.json

Clean up JSON formatting by removing unnecessary trailing comma
from PepSettings section.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

PepApi.Core/appsettings.json

@@ -10,7 +10,7 @@
     "PepDB": "data source=REMCOSRV0\\RWS64;initial catalog=PEP;integrated security=True;MultipleActiveResultSets=True;TrustServerCertificate=True"
   },
   "PepSettings": {
-    "NestDirectory": "\\\\REMCOSRV0\\PEP Nest",
+    "NestDirectory": "\\\\REMCOSRV0\\PEP Nest"
   },
   "Kestrel": {
     "Endpoints": {