docs/features/NODES.md - Fix image links

[ymgenesis]

What type of PR is this? (check all applicable)

• Refactor
• Feature
• Bug Fix
• Optimization
• Documentation Update
• Community Node Submission

Have you discussed this change with the InvokeAI team?

• Yes
• No, because:

Have you updated all relevant documentation?

• Yes
• No

Description

Updated broken image links in NODES.md

[Millu]

Thanks for updating these!

For the future, you can link images in the docs with the relative path like this: ![image](assests/sub_folder/screenshot.png) (assuming the images have been added to the assets/sub_folder folder)

[ymgenesis]

@Millu Sure! I had them in assets before it was committed to invoke's main, and for some reason they disappeared. I had just uploaded them when editing directly in my fork and branch.

[lstein]

I don't think it's a great idea for us to rely on a third party image-serving service for this. Could you move the images into the repo under ./docs/assets/nodes/ and refer to them using markdown following this format:

![groupsnoise](../assets/nodes/groupsnoise.png"){width=654px }

It looks like the original author of NODES.md didn't realize that the docs would be passed through mkdocs before publication, and I didn't notice all the broken image icons till just now.

[ymgenesis]

@lstein Done. I had written the documentation originally, and wasn't aware of the process the assets would go through after being committed. Should be all good now!

[hipsterusername]

Thanks for the updates!

Addressed