[C++] updated release notes w.r.t. LocalCapabilitiesDirectory change
[C++] updated release notes w.r.t. LocalCapabilitiesDirectory change

Change-Id: I755c567673612c2b8f15c6140577c44b8db9a74b

bmwcarit/joynr,bmwcarit/joynr,bmwcarit/joynr,bmwcarit/joynr,bmwcarit/joynr,bmwcarit/joynr,bmwcarit/joynr,bmwcarit/joynr,bmwcarit/joynr