chore: A quick fix for the aiplatform.start_run() doc

PiperOrigin-RevId: 530771081

Author: vertex-sdk-bot

google/cloud/aiplatform/metadata/metadata.py

@@ -391,7 +391,7 @@ def start_run(
         Resume a previously started run:
         ```
         aiplatform.init(experiment='my-experiment')
-        with aiplatform.start_run('my-run') as my_run:
+        with aiplatform.start_run('my-run', resume=True) as my_run:
             my_run.log_params({'learning_rate':0.1})
         ```