[roll] Roll fuchsia [docs] Refresh virtualization docs.

A few changes have been made:

- Add warnings about unsupported status
- Refresh build instructions with assembly override
- Minor reorderings for clarity and common use cases.

Original-Bug: 370623871
Test: Local workflow validation
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1250965
Original-Revision: 5ec155cb753a5128fc1e3530f78bb343441ffdf9
GitOrigin-RevId: 128594fde5690289d2cfbb8c1ea94073a8a7e280
Change-Id: Id2cc5473345e7eb2159e534fc025ed2136d89a21
diff --git a/stem b/stem
index 6bc7f17..ce99a13 100644
--- a/stem
+++ b/stem
@@ -11,7 +11,7 @@
              githooks="integration/git-hooks"
              remote="https://fuchsia.googlesource.com/fuchsia"
              gerrithost="https://fuchsia-review.googlesource.com"
-             revision="58eeb3273c03d169df6a71012a960fd310134ebc"
+             revision="5ec155cb753a5128fc1e3530f78bb343441ffdf9"
              />
   </projects>
   <hooks>