[docs] Update list of resources

[jjfumero]

Description

Update the list of online resources for TornadoVM.

Problem description

If the patch provides a fix for a bug, please describe what was the issue and how to reproduce the issue.

Backend/s tested

Not applicable

• [ ] OpenCL
• [ ] PTX
• [ ] SPIRV

OS tested

Not applicable

• [ ] Linux
• [ ] OSx
• [ ] Windows

Did you check on FPGAs?

Not applicable

• [ ] Yes
• [X] No

[jjfumero]

The format is fixed. The PR is ready for review.