Fix samples

Signed-off-by: Charles d'Avernas <charles.davernas@neuroglia.io>

Author: cdavernas

examples/run-return-all.yaml

@@ -8,4 +8,4 @@ do:
       run:
         container:
           image: hello-world
-      return: all
+        return: all

examples/run-return-code.yaml

@@ -8,4 +8,4 @@ do:
       run:
         container:
           image: hello-world
-      return: code
+        return: code

examples/run-return-none.yaml

@@ -8,4 +8,4 @@ do:
       run:
         container:
           image: hello-world
-      return: none
+        return: none

examples/run-return-stderr.yaml

@@ -8,4 +8,4 @@ do:
       run:
         container:
           image: hello-world
-      return: stderr
+        return: stderr