[roll] Roll fuchsia [docs][sdk] Add an overview page for the Fuchsia SDK section.

Test: doc-preview
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/668833
Original-Revision: fa5fd611d2cd48c183d3408cf54cfe2cdf1c8e22
GitOrigin-RevId: b18988ba7df232eb7d417be6074276b9f2b998c7
Change-Id: I23c7457b8d3af53c02d5242b14dbdb876a7301dc
diff --git a/stem b/stem
index d1bf04e..6018fcd 100644
--- a/stem
+++ b/stem
@@ -10,7 +10,7 @@
              githooks=""
              remote="https://fuchsia.googlesource.com/fuchsia"
              gerrithost="https://fuchsia-review.googlesource.com"
-             revision="dc89defcac49ee48d40d5b7a14a543fac1e51175"/>
+             revision="fa5fd611d2cd48c183d3408cf54cfe2cdf1c8e22"/>
   </projects>
   <hooks>
     <hook name="install-environment"