Update README.md

README.md

 **Main objective** - To develop a Mobile Responsive Web Application that would help presenters to prepare beforehand for the presentations to deliver a successful speech to the audience.
 
-**Main Research questions **- Not having a proper system to self evaluate the presentation skills of a presenter. 
+**Main Research questions ** - Not having a proper system to self evaluate the presentation skills of a presenter. 
 
 **Individual research questions**