Move support for filtering on node labels to API v1.40

This feature was added in 514ce73391d065136a2cdfe9f0348dfe1bcc5c43,
and was merged after API v1.39 shipped as part of the Docker 18.09

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

docs/api/version-history.md

@@ -23,6 +23,10 @@ keywords: "API, Docker, rcli, REST, documentation"
 * `POST /services/{id}/update` now accepts `Sysctls` as part of the `ContainerSpec`.
 * `GET /tasks` now  returns `Sysctls` as part of the `ContainerSpec`.
 * `GET /tasks/{id}` now  returns `Sysctls` as part of the `ContainerSpec`.
+* `GET /nodes` now supports a filter type `node.label` filter to filter nodes based
+  on the node.label. The format of the label filter is `node.label=<key>`/`node.label=<key>=<value>`
+  to return those with the specified labels, or `node.label!=<key>`/`node.label!=<key>=<value>`
+  to return those without the specified labels.
 
 ## V1.39 API changes
 
@@ -37,10 +41,6 @@ keywords: "API, Docker, rcli, REST, documentation"
 * `POST /swarm/init` now accepts a `DefaultAddrPool` property to set global scope default address pool
 * `POST /swarm/init` now accepts a `SubnetSize` property to set global scope networks by giving the
   length of the subnet masks for every such network
-* `GET /nodes` now supports a filter type `node.label` filter to filter nodes based
-  on the node.label. The format of the label filter is `node.label=<key>`/`node.label=<key>=<value>`
-  to return those with the specified labels, or `node.label!=<key>`/`node.label!=<key>=<value>`
-  to return those without the specified labels.
 
 ## V1.38 API changes