[INTERNAL] sap.m.Slider: improve documentation
[INTERNAL] sap.m.Slider: improve documentation

Change-Id: I9f8744d8ad4650362ae35c9dd7b82746c2620364

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