How to change Wiki Page title, but not URL? - SharePoint 2013

Hello,

I know this is a basic question. Yet I am asking . I have tried adding a title column from browser (OOB) and no changes. 

Please see the attached image below. 

My requirement is to change the highlighted text. Is there any way to achieve this from browser? I can use SP Designer but not Visual Studio (I am not authorized to).

I have tried changing home.aspx page in SP Designer 

<asp:Content ContentPlaceHolderID="PlaceHolderPageTitleInTitleArea" runat="server"><SharePoint:ListItemProperty Property="Test" runat="server"/></asp:Content>

by removing the line <Sharepoint: ListItemProperty ......> and replacing with my desired title text. But nothing happened. 

Please give me a solution.

Thanks in advance.