message: updated status code defaults to include 500
diff: @@ -304,7 +304,7 @@ Configuration begins with with the following built-in default values baked into
  - verbosity: `0` (no logging enabled)
  - scan_limit: `0` (no limit imposed on concurrent scans)
  - rate_limit: `0` (no limit imposed on requests per second)
  -- status_codes: `200 204 301 302 307 308 401 403 405`
  +- status_codes: `200 204 301 302 307 308 401 403 405 500`
  - user_agent: `feroxbuster/VERSION`
  - recursion depth: `4`
  - auto-filter wildcards - `true`
  @@ -556,7 +556,7 @@ OPTIONS:
  Limit total number of concurrent scans (default: 0, i.e. no limit)
  -s, --status-codes <STATUS_CODE>...
  - Status Codes to include (allow list) (default: 200 204 301 302 307 308 401 403 405)
  + Status Codes to include (allow list) (default: 200 204 301 302 307 308 401 403 405 500)
  -t, --threads <THREADS>
  Number of concurrent threads (default: 50)
  