Docs: add EngFlow to remote-execution.md

RELNOTES: none

Closes #11075.

PiperOrigin-RevId: 306228534

site/docs/remote-execution.md

diff --git a/site/docs/remote-execution.md b/site/docs/remote-execution.md
index e1b176a..c92a96c 100644
--- a/site/docs/remote-execution.md
+++ b/site/docs/remote-execution.md
@@ -26,22 +26,23 @@
 
 <!-- to-do: When we have a public post to link to, include: *  Use [Cloud Build for Bazel](), which is a remote execution service from Google -->
 
-*  Manual
+*   Manual
     *   Use the
         [gRPC protocol](https://github.com/bazelbuild/remote-apis)
         directly to create your own remote execution service.
-*   Self-hosted
+*   Self-service
     *   [Buildbarn](https://github.com/buildbarn)
     *   [Buildfarm](https://github.com/bazelbuild/bazel-buildfarm)
     *   [BuildGrid](https://gitlab.com/BuildGrid/buildgrid)
     *   [Scoot](https://github.com/twitter/scoot)
-*   Hosted
+*   Commercial
     *   Remote Build Execution, which is a remote execution service from Google.
         Joining the
         [RBE Alpha Customers group](https://groups.google.com/forum/#!forum/rbe-alpha-customers)
         will give you full access to the official documentation.
         To begin using the service, fill out this
         [short information form](https://docs.google.com/forms/d/e/1FAIpQLScBai-iQ2tn7RcGcsz3Twjr4yDOeHowrb6-3v5qlgS69GcxbA/viewform).
+    *   [EngFlow Remote Execution](https://www.engflow.com) -- Remote execution and remote caching service. Can be self-hosted or hosted.
 
 ## Requirements