docs: Fix typo in kube_node_deletion_timestamp description

Signed-off-by: Grzegorz Głąb <[email protected]>

Author: grzesuav

docs/node-metrics.md

@@ -12,4 +12,4 @@
 | kube_node_status_allocatable | Gauge | The amount of resources allocatable for pods (after reserving some for system daemons) | `cpu`=&lt;core&gt; <br> `ephemeral_storage`=&lt;byte&gt; <br> `pods`=&lt;integer&gt; <br> `attachable_volumes_*`=&lt;byte&gt; <br> `hugepages_*`=&lt;byte&gt; <br> `memory`=&lt;byte&gt; |`node`=&lt;node-address&gt; <br> `resource`=&lt;resource-name&gt; <br> `unit`=&lt;resource-unit&gt;| STABLE |
 | kube_node_status_condition | Gauge | The condition of a cluster node | |`node`=&lt;node-address&gt; <br> `condition`=&lt;node-condition&gt; <br> `status`=&lt;true\|false\|unknown&gt; | STABLE |
 | kube_node_created | Gauge | Unix creation timestamp | seconds |`node`=&lt;node-address&gt;| STABLE |
-| kube_node_deletion_timestamp | Gauge | Unix creation timestamp | seconds |`node`=&lt;node-address&gt;| EXPERIMENTAL |
+| kube_node_deletion_timestamp | Gauge | Unix deletion timestamp | seconds |`node`=&lt;node-address&gt;| EXPERIMENTAL |