fix indent for cel.expression

Signed-off-by: jmnote <[email protected]>

Author: jmnote

content/en/examples/dra/resourceclaimtemplate.yaml

@@ -11,6 +11,6 @@ spec:
           deviceClassName: example-device-class
           selectors:
           - cel:
-            expression: |-
+              expression: |-
                 device.attributes["driver.example.com"].type == "gpu" &&
                 device.capacity["driver.example.com"].memory == quantity("64Gi")