fix: Example hello_world.py Context naming (#2833)

Signed-off-by: nnshah1 <neelays@nvidia.com>

Author: kthui

examples/runtime/hello_world/hello_world.py

@@ -18,15 +18,15 @@
 
 import uvloop
 
-from dynamo.runtime import DistributedRuntime, PyContext, dynamo_endpoint, dynamo_worker
+from dynamo.runtime import Context, DistributedRuntime, dynamo_endpoint, dynamo_worker
 from dynamo.runtime.logging import configure_dynamo_logging
 
 logger = logging.getLogger(__name__)
 configure_dynamo_logging(service_name="backend")
 
 
 @dynamo_endpoint(str, str)
-async def content_generator(request: str, context: PyContext):
+async def content_generator(request: str, context: Context):
     logger.info(f"Received request: {request} with `id={context.id()}`")
     for word in request.split(","):
         await asyncio.sleep(1)