MIFOSX-247: update api document for savings account transactions api.
MIFOSX-247: update api document for savings account transactions api.

Vishwa1311/incubator-fineract,Vishwa1311/incubator-fineract,RanjithKumar5550/RanMifos,RanjithKumar5550/RanMifos,Vishwa1311/incubator-fineract,RanjithKumar5550/RanMifos