Merge pull request #1249 from maxmind/greg/eng-964-new-payment-processors-input-values-are-supported-by

greg/eng 964 new payment processors input values are supported by

Author: horgh

content/minfraud/api-documentation/requests.md

@@ -552,6 +552,7 @@ where the event took place
   * `elavon`
   * `emerchantpay`
   * `epay`
+  * `epayco`
   * `eprocessing_network`
   * `epx`
   * `eway`