Update docs to include example of tolerations in a pod (#16157)

Co-Authored-By: Tim Bannister <tim@scalefactory.com>

content/en/docs/concepts/configuration/taint-and-toleration.md

@@ -61,6 +61,10 @@ tolerations:
   effect: "NoSchedule"
 ```
 
+Here’s an example of a pod that uses tolerations:
+
+{{< codenew file="pods/pod-with-toleration.yaml" >}}
+
 A toleration "matches" a taint if the keys are the same and the effects are the same, and:
 
 * the `operator` is `Exists` (in which case no `value` should be specified), or

content/en/examples/pods/pod-with-toleration.yaml

@@ -0,0 +1,15 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: nginx
+  labels:
+    env: test
+spec:
+  containers:
+  - name: nginx
+    image: nginx
+    imagePullPolicy: IfNotPresent
+  tolerations:
+  - key: "example-key"
+    operator: "Exists"
+    effect: "NoSchedule"