fix: Update broken repo hyperlink

[lamhoangtung]

Description

Hi, I'm looking in the new documentation over at https://pytorch.org/TensorRT/ and found some hyperlink broken for the torchtrt_runtime example and decided to do a quick PR to fix it.

I also found a bunch of old link to this repo and updated it with the new repo link under pytorch organization

Type of change

• This change requires a documentation update

Checklist:

• My code follows the style guidelines of this project (You can use the linters)
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas and hacks
• I have made corresponding changes to the documentation
• I have added tests to verify my fix or my feature
• New and existing unit tests pass locally with my changes
• I have added the relevant labels to my PR in so that relevant reviewers are notified

[narendasan]

Looks good to me! Thanks!