Hallo Vanja!

Thank you for your Mail! I will try to answer your questions:
1. Change name of E4, section 11:
The published PSS-GPX-File only goes from Lazarev kanjon to Sokobanja. The section from Krivelj to Lazarev kanjon is missing. That was the reason for my change. I think it is misleading if the name differs from the content. Using the bracket makes it easier to understand that the section is incomplete.
2. Change wiki-link from "url tag" to "note tag":
Selected applications allow you to click on url-tags to display the page in the browser. This doesn't work for note-tags. This was the reason for me using the "url tag".
Besides that: Editing is easier when the information doesn't have to be updated in multiple places.
If the information is only available in one place, a link from other sites is sufficient.
3. Add wiki-link to other sections:
I think, it is useful to add a wiki-link also to other sections of E paths in Serbia.
4. Removed path around Ilino village:
I hiked this trail on May 20nd this year (http://stadtigel.bplaced.de/GPS/gps.htm?GPX=2023-05-17bis06-03_E4_Serbien.gpx). The path behind Ilino (from published PSS-GPX-File) did not exist because of the lush vegetation. The actually marked path goes to Garnavica (https://www.openstreetmap.org/relation/15978884). 
It is possible that the path continue behind the Garnavica, but this path was too difficult for me. Instead I followed the road to Rtanj village. I would appreciate it if you contacted the local club about this.

With friendly greetings
Stadtigel from Germany