[ssci] Update URL in README.chromium

This CL updates the URL in the README.chromium file in
/third_party/fuchsia-gn-sdk, as the current value does not work.

This CL was uploaded by git cl split.

R=chonggu@google.com

Bug: b:290296624
Change-Id: I4d63f5783b4dc888ababed583488a209bbeeb6cd
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4942574
Reviewed-by: Chong Gu <chonggu@google.com>
Auto-Submit: Anne Redulla <aredulla@google.com>
Commit-Queue: Anne Redulla <aredulla@google.com>
Cr-Commit-Position: refs/heads/main@{#1211951}
NOKEYCHECK=True
GitOrigin-RevId: f95987b1b7967a3751675eb4d6056d3900f7e45f
1 file changed
tree: 55b3543e4c54a6cbbf16922bcdd57c1821f637a1
  1. src/
  2. DIR_METADATA
  3. LICENSE
  4. OWNERS
  5. README.chromium