Docs: Replace Main Refs with Tag Refs in Quickstart

[danehans]

Due to #1602, the current quickstart is broken for all inference gateway's except GKE. #1603 fixes this issue but the quickstart still references the v1.0.1 manifests which contain the bug. Until a release is published with the fix, the quickstart should be updated to use the HTTPRoute manifest from the main branch and updated to use v1.1.0 RC when the release candidate is published.

[danehans]

Closing since we are proceeding with the v1.0.2 patch release.