Update response-specification.md

Author: avengedpeak

specification/response-specification.md

@@ -26,7 +26,7 @@ Encrypted parameters \(see below\)
 format will be ddmmyyyyhh24misss UTC
 {% endapi-method-parameter %}
 
-{% api-method-parameter name="requestorId" type="string" required=true %}
+{% api-method-parameter name="fi" type="string" required=true %}
 Unique AA identifier. This will be encrypted using Base64/XOR along with resdate field
 {% endapi-method-parameter %}
 {% endapi-method-path-parameters %}