improve docs

issues.md

@@ -91,7 +91,7 @@ Smart cut is experimental, so don't expect too much. But if you're having proble
 
 Some MP4 files FFmpeg is not able to export as MP4 and MOV needs to be selected instead. Unfortunately I don't know any way to fix this. Sometimes certain players are not able to play back certain exported `.mov` files ([Adobe Premiere](https://github.com/mifi/lossless-cut/issues/1075#issuecomment-2327459890) 👀). You can try to rename the exported MOV file extension to `.mp4` and see if it helps. Or vice versa, rename an exported MP4 file to `.mov`.
 
-## Output file name is missing characters
+## Output file name is missing characters (Chinese, accents etc)
 
 If the output file name has special characters that get replaced by underscore (`_`), try to turn off ["Sanitize"](https://github.com/mifi/lossless-cut/issues/889) in the "Output file names" editor in the "Export options" dialog. Note that this will cause special characters like `/` to be preserved. Some characters are not supported in some operating systems, so be careful. using `/` or `\` can be used to create a folder structure from your segments when exported.