Fpath uri bugfix

[gladkia]

Fix for the issue: https://github.com/gladkia/igvR/issues/30.

Related docs:

• https://stackoverflow.com/questions/34772617/proper-formatting-of-file-uri-in-file-protocol
• https://github.com/nodejs/node/issues/20080
• https://en.wikipedia.org/wiki/File_URI_scheme#:~:text=A%20valid%20file%20URI%20must,correct%2C%20but%20is%20often%20used.
• https://support.ptc.com/help/windchill/r12.1.2.0/it/index.html#page/Windchill_Help_Center/IEUsersGuide/IEUG_JSPSpecifyURIs.html