Hi Ravi,
Without touching staging and as well as CRXDE, you can also change name of the page using authoring move operation. Below are the below steps.
1. Go to http://localhost:4502/sites.html/content/ where you want to change the name of the page and click on the page which you want to rename of the page and click on Move button as shown below.

2. Now you can rename the page as per your wish and click Next as shown below.

3. Now move the renamed page in same location as per the original destination and click next as shown below.

4. Now you can finally click move button, so that you can see the page name reflected in the URL.

I tested it and it works!!
Hope this helps!!
Thanks,
Ratna Kumar.