Use console in code blocks for appropriate code syntax highlighting

Signed-off-by: Jack Baldry <[email protected]>

Author: jdbaldry

README.md

@@ -8,47 +8,47 @@ To generate the YAMLs for deploying Cortex:
 
     Follow the steps at https://tanka.dev/install. If you have `go` installed locally you can also use:
 
-    ```
-    # make sure to be outside of GOPATH or a go.mod project
+    ```console
+    $ # make sure to be outside of GOPATH or a go.mod project
     $ GO111MODULE=on go get github.com/grafana/tanka/cmd/tk
     $ GO111MODULE=on go get github.com/jsonnet-bundler/jsonnet-bundler/cmd/jb
     ```
 
 1. Initialise the application and download the cortex jsonnet lib.
 
-    ```
+    ```console
     $ mkdir <name> && cd <name>
     $ tk init
     $ jb install github.com/grafana/cortex-jsonnet/cortex
     ```
 1. Use the example monitoring.jsonnet.example:
 
-    ```
+    ```console
     $ cp vendor/cortex/cortex-manifests.jsonnet.example environments/default/main.jsonnet
     ```
 
 1. Check what is in the example:
 
-    ```
+    ```console
     $ cat environments/default/main.jsonnet
     ...
     ```
 
 1. Generate the YAML manifests:
 
-    ```
+    ```console
     $ tk show environments/default
     ```
 
     To output YAML manifests to `./manifests`, run:
 
-    ```
+    ```console
     $ tk export environments/default manifests
     ```
 
     To generate the dashboards and alerts for Cortex:
 
-    ```
+    ```console
     $ cd cortex-mixin
     $ jb install
     $ mkdir out