Added type to codeblocks

Signed-off-by: Patryk Strusiewicz-Surmacki <[email protected]>

docs/user-guide/src/capm3/clusterclass.md

@@ -60,30 +60,30 @@ environment.
 
 1. Clone CAPM3 repository.
 
-    ```
+    ```shell
     git clone https://github.com/metal3-io/cluster-api-provider-metal3.git
     ```
 
 1. Generate Tilt settings that will enable ClusterClass support in CAPI.
 
-    ```
+    ```shell
     make tilt-settings-clusterclass
     ```
 
 1. Start Tilt.
 
-    ```
+    ```shell
     make tilt-up
     ```
 
 1. Generate ClusterClass based example.
 
-    ```
+    ```shell
     make generate-examples-clusterclass
     ```
 
 1. Deploy example `ClusterClass`, `Cluster` and all the dependencies.
 
-    ```
+    ```shell
     make deploy-examples-clusterclass
     ```