[BUG] - Port v2.1.1 | Templates JSON | Unable to retrieve templates

[quadcom]

Describe the bug
I've added the URL for the JSON templates list. After saving and going to the App Templates in Portainer there was an error message at the top right. "Unable to retrieve templates"

To Reproduce
Steps to reproduce the behavior:

1. Add template JSON URL -> https://raw.githubusercontent.com/SelfhostedPro/selfhosted_templates/master/Template/template.json
2. Save
3. review templates availble

Expected behavior
I expected to see a list of 80+ app templates

Portainer Logs
today at 12:52 PM 2021/03/01 17:52:22 http error: Invalid request payload (err=Invalid external templates URL. Must correspond to a valid URL format) (code=400)

Would really like to see Portainer support multiple external template URLS. The v2.1.1 install came with a JSON already present in the templates field (https://raw.githubusercontent.com/portainer/templates/master/templates-2.0.json).

[FatherTusker]

From the Reddit thread, it appears that the correct URL for v2.0+ is https://raw.githubusercontent.com/SelfhostedPro/selfhosted_templates/portainer-2.0/Template/template.json
Can confirm it works for me on 2.1.1 (running on OMV 5.6.2-1)