[stable/2023.1] fix doc typo (#1346)

Co-authored-by: R. P. Taylor <1686627+rptaylor@users.noreply.github.com>
diff --git a/doc/source/index.rst b/doc/source/index.rst
index 38b7906..2f26821 100644
--- a/doc/source/index.rst
+++ b/doc/source/index.rst
@@ -3,7 +3,7 @@
 ##########
 
 Atmosphere is an advanced OpenStack distribution that is powered by open source
-technologies & built by `VEXXHOST <https://vexxhost.com>`_ powered by Kuberentes,
+technologies & built by `VEXXHOST <https://vexxhost.com>`_ powered by Kubernetes,
 which allows you to easily deliver virtual machines, Kubernetes and bare-metal
 on your on-premise hardware.