added 0.15.1 rn

docs/rn/0.15.md

@@ -37,7 +37,11 @@ With that in mind we launched the containerlab's own [discord server](https://di
 * a new [`--keep-mgmt-net`](../cmd/destroy.md#keep-mgmt-net) flag has been added to `destroy` command to prevent the management network deletion attempt
 * the MTU on the veth links created between the containers has been lowered to 9500 from its original 65000 value
 
+## Patches
 
+### 0.15.1
+* Fixed directories creation for `ignite` runtimes
+* Fixed release notes links in `containerlab version` command
 
 [^1]: as opposed to a VM-way by running Cumulus with [vrnetlab](../manual/vrnetlab.md)
 [^2]: both with `ignite` runtime or `docker` runtime