[FIX] sap.m.FormattedText: JSDoc documentation improvement
[FIX] sap.m.FormattedText: JSDoc documentation improvement

- Added note describing the control behavior towards not-supported
HTML tags

Change-Id: I83cbe5aefc9028dc1ea412b7775d4526223a9c5f
BCP: 1770258671

SAP/openui5,SQCLabs/openui5,SQCLabs/openui5,cschuff/openui5,cschuff/openui5,SAP/openui5,SQCLabs/openui5,nzamani/openui5,cschuff/openui5,SAP/openui5,nzamani/openui5,SAP/openui5,nzamani/openui5