fix: add space to allow adk deploy cloud_run --a2a

Merge #2138

This missing space leads to an error when deploying to cloud_run that says "No option --a2a/apps/agents"

COPYBARA_INTEGRATE_REVIEW=#2138 from andrewlarimer:fix--add-space-to-allow-adk-deploy-cloud_run---a2a 47831f1
PiperOrigin-RevId: 786459787

Author: andrewlarimer

src/google/adk/cli/cli_deploy.py

@@ -55,7 +55,7 @@
 
 EXPOSE {port}
 
-CMD adk {command} --port={port} {host_option} {service_option} {trace_to_cloud_option} {allow_origins_option} {a2a_option}"/app/agents"
+CMD adk {command} --port={port} {host_option} {service_option} {trace_to_cloud_option} {allow_origins_option} {a2a_option} "/app/agents"
 """
 
 _AGENT_ENGINE_APP_TEMPLATE = """