u/Massive_Hotel8620

hello! I'm not sure if this is the right sub to ask for help, but I am in a rush. pictured below is my issue.

in the table of contents, only one picture (aka "Slika") has an added space between the word and the number. though the extra space is not shown with the "hidden symbols." This is only for this one picture. I have checked the formatting, and it is identical to all other pictures. Do you have any idea what is going on?