indent shell examples

Author: bckohan

CONTRIBUTING.md

@@ -20,8 +20,8 @@ We provide a platform independent justfile with recipes for all the development
 Next, initialize and install the development environment:
 
 ```shell
-just setup
-just install
+    just setup
+    just install
 ```
 
 ## Documentation
@@ -92,7 +92,7 @@ Additional dependency groups will need to be installed for some RDBMS, to run th
 The release workflow is triggered by tag creation. You must have [git tag signing enabled](https://docs.github.com/en/authentication/managing-commit-signature-verification/signing-commits). Our justfile has a release shortcut:
 
 ```shell
-just release x.x.x
+    just release x.x.x
 ```
 
 ## Just Recipes