Added unsharp mask node to communityNodes.md (#5110)

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

- [ ] Refactor
- [ ] Feature
- [ ] Bug Fix
- [ ] Optimization
- [ ] Documentation Update
- [X] Community Node Submission


## Have you discussed this change with the InvokeAI team?
- [ ] Yes
- [X] No, because:

      
## Have you updated all relevant documentation?
- [X] Yes
- [ ] No


## Description


## Related Tickets & Documents

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## QA Instructions, Screenshots, Recordings

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## Added/updated tests?

- [ ] Yes
- [X] No : _please replace this line with details on why tests
      have not been included_

## [optional] Are there any post deployment tasks we need to perform?
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Millun Atluri 2023-11-17 07:51:09 +11:00 committed by GitHub
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@ -32,6 +32,7 @@ To use a community workflow, download the the `.json` node graph file and load i
+ [Size Stepper Nodes](#size-stepper-nodes)
+ [Text font to Image](#text-font-to-image)
+ [Thresholding](#thresholding)
+ [Unsharp Mask](#unsharp-mask)
+ [XY Image to Grid and Images to Grids nodes](#xy-image-to-grid-and-images-to-grids-nodes)
- [Example Node Template](#example-node-template)
- [Disclaimer](#disclaimer)
@ -316,6 +317,13 @@ Highlights/Midtones/Shadows (with LUT blur enabled):
<img src="https://github.com/invoke-ai/InvokeAI/assets/34005131/0a440e43-697f-4d17-82ee-f287467df0a5" width="300" />
<img src="https://github.com/invoke-ai/InvokeAI/assets/34005131/0701fd0f-2ca7-4fe2-8613-2b52547bafce" width="300" />
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### Unsharp Mask
**Description:** Applies an unsharp mask filter to an image, preserving its alpha channel in the process.
**Node Link:** https://github.com/JPPhoto/unsharp-mask-node
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### XY Image to Grid and Images to Grids nodes