[FIX] JSONModel JSDoc: inheritance information corrected

was: Model
is: ClientModel
This caused the API doc to be incomplete

Change-Id: I5a5a6e3bdeb9017a67d82b8480da7b5dc0545f8a
CR-Id: 012006153200015628182014
Merge "[FIX] JSONModel JSDoc: inheritance information corrected" into rel-1.26