[Docs] Fix kubernetes typos (#3169)

* Update kubernetes

* Update home.html

* Update kubernetes-beta.md

* Update home.html

Author: svanzoest

docs/blog/posts/kubernetes-beta.md

@@ -148,7 +148,7 @@ Before running a distributed task, create a fleet with `placement` set to `clust
 
     placement: cluster
 
-    backends: [kuberenetes]
+    backends: [kubernetes]
 
     resources:
       # Specify requirements to filter nodes

docs/docs/guides/kubernetes.md

@@ -64,7 +64,7 @@ If you’d like to run [distributed tasks](../concepts/tasks.md#distributed-task
 
     placement: cluster
 
-    backends: [kuberenetes]
+    backends: [kubernetes]
 
     resources:
       # Specify requirements to filter nodes

docs/overrides/home.html

@@ -172,7 +172,7 @@ <h2>Native integration with GPU clouds</h2>
                     </p>
 
                     <p>
-                        It can provision and manage VM clusters through native integrations or via <span class="highlight">Kuberenetes</span>.
+                        It can provision and manage VM clusters through native integrations or via <span class="highlight">Kubernetes</span>.
                     </p>
 
                     <p>
@@ -204,9 +204,9 @@ <h2>Native integration with GPU clouds</h2>
                     <h2>Easy to use with on-prem clusters</h2>
 
                     <p>
-                        For provisioned <span class="highlight">Kuberenetes</span> clusters, connect them to <span class="highlight">dstack</span> using the <span
+                        For provisioned <span class="highlight">Kubernetes</span> clusters, connect them to <span class="highlight">dstack</span> using the <span
                             class="highlight">Kubernetes</span> backend.
-                        If you run vanilla bare-metal servers or VMs without <span class="highlight">Kuberenetes</span>, use <span class="highlight">SSH fleets</span>
+                        If you run vanilla bare-metal servers or VMs without <span class="highlight">Kubernetes</span>, use <span class="highlight">SSH fleets</span>
                         instead.
                     </p>