tests: fix typo

Signed-off-by: mikeee <[email protected]>

Author: mikeee

examples/hello-world/README.md

@@ -105,7 +105,7 @@ expected_stdout_lines:
 -->
 
 ```bash
-dapr run --app-id order-app --dapr-grpc-port 3500 --log-level error --resources-path ./config./order get
+dapr run --app-id order-app --dapr-grpc-port 3500 --log-level error --resources-path ./config ./order get
 ```
 
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