[FIX] ManagedObject: improve JSDoc of 'parameters' in bindObject etc.
[FIX] ManagedObject: improve JSDoc of 'parameters' in bindObject etc.

The bindObject, bindProperty and bindAggregation methods of
ManagedObject each accept a 'parameters' option to define additional,
model specific parameters for a binding. The documentation now describes
more clearly that those parameters need to be looked up in the
documentation of the model implementation (or its binding
implementations).

Fixes: https://github.com/SAP/openui5/issues/1476
Change-Id: I570804b78b16e0ac5733eabf3c249b1e3fa246de
BCP: 1770259772
SAP/openui5,SAP/openui5,SAP/openui5,SAP/openui5