modifie standalone example to run with changed slo definition

theodolite/examples/standalone/example-execution.yaml

@@ -8,10 +8,11 @@ resources:
   resourceValues: [1, 2, 3, 4, 5]
 slos:
   - sloType: "lag trend"
-    threshold: 2000
     prometheusUrl: "http://prometheus-operated:9090"
-    externalSloUrl: "http://localhost:80/evaluate-slope"
     offset: 0
+    properties:
+      threshold: 2000
+      externalSloUrl: "http://localhost:80/evaluate-slope"
       warmup: 60 # in seconds
 execution:
   strategy: "LinearSearch"