Lack of visual cue: When specifying a binary resource to collect, ask for the missing comma, to specify a file name

[desbest]

I've noticed that a visual cue might need to be added, which can save people hours of time for debugging why their code or macro instructions didn't work.

When specifying a binary resource to collect, it would be good if we could ask for the missing comma, if the user didn't include it, so the user can then file name for the scraped file.
For example, if I have an image like

<img src="landscape1.jpg" class="myphoto" title="photo 1">
<img src="landscape2.jpg" class="myphoto" "title="photo 2">

If I just have my binary resource under "extract url's plugin" be .myphoto instead of .myphoto,title, then when downloading the zip file, every file in the zip file will be called .jpg, hence they'll only be one file in that zip file.

Can a visual cue be added?