[INTERNAL] sap.m.MessageStrip: Documentation update
[INTERNAL] sap.m.MessageStrip: Documentation update

New paragraph is added into the control's about section in the API
reference in order to clarify the usage of dynamically generated
MessageStrip with sap.ui.core.InvisibleMessage service and the term
"Information Bar".

JIRA: BGSOFUIRILA-2860
Change-Id: I3937c5e897615bad55495d2acb2652734926cd22

SAP/openui5,SAP/openui5,SAP/openui5,SAP/openui5