fixed hero mdbook parsing

collections/developers/grid_deployment/grid_deployment_full_vm.md

@@ -72,9 +72,9 @@ We show the steps to prepare the VM to run the network instance.
 If you are deploying on testnet or devnet, simply replace `mainnet` by the proper network in the following lines.
 
 - Set the prerequisites
-  ```
-  apt update && apt install -y git nano ufw
-  ```
+```
+apt update && apt install -y git nano ufw
+```
 - Download the ThreeFold Tech `grid_deployment` repository
     ```
     git clone https://github.com/threefoldtech/grid_deployment
@@ -82,11 +82,11 @@ If you are deploying on testnet or devnet, simply replace `mainnet` by the prope
     ```
 - Generate a TFChain node key with `subkey`
   - Note: If you deploy the 3 network instances, you can use the same node key for all 3 networks. But it is recommended to use 3 different keys to facilitate management.
-    ```
-    echo .nodekey_mainnet >> .gitignore
-    ../../apps/subkey generate-node-key > .nodekey_mainnet
-    cat .nodekey_mainnet
-    ```
+```
+echo .nodekey_mainnet >> .gitignore
+../../apps/subkey generate-node-key > .nodekey_mainnet
+cat .nodekey_mainnet
+```
 - Create and the set environment variables file
     ```
     cp .secrets.env-example .secrets.env