change the title of a Webpage

I would like to change the title of a Webpage to reflect the same thing I am putting as the Page Name (in the Page Settings). I know how to change it in the navigation menu, but that does not change it in the file itself or what appears in the address bar.

For example, I named my page Cindy's Speaking Topics, but afterwards realized that apostrophe's don't show up so it looks weird and will be difficult to direct people to. I changed it in the Page Name so the tab shows Speaker | Cindy Nicolai but the address still shows the ...Cindy-s-Speaking-Topics .

How can this be changed? Can I go into the File Manager and change the name? I would appreciate your advice.

Thanks in advance!

Cindy