docs(concat_string): add lines to usage example

1 year ago · 21f63d3e4d
1 changed files with 3 additions and 1 deletions
--- a/subjects/devops/concat_string/README.md
+++ b/subjects/devops/concat_string/README.md
@ -21,7 +21,9 @@ print(concat_string.concat(string1, string2))
 This will output:

 ```console
-'Hello, World'
+$ python3 test.py
+<expected output>
+$
 ```

 ### References