Fix j2

Author: jasonyang101

src/agentex/lib/cli/templates/temporal/project/workflow.py.j2

@@ -7,7 +7,7 @@ from agentex.lib.types.acp import CreateTaskParams, SendEventParams
 from agentex.lib.core.temporal.workflows.workflow import BaseWorkflow
 from agentex.lib.core.temporal.types.workflow import SignalName
 from agentex.lib.utils.logging import make_logger
-from agentex.types.task_message import TextContent
+from agentex.types.text_content import TextContent
 from agentex.lib.environment_variables import EnvironmentVariables
 
 environment_variables = EnvironmentVariables.refresh()