Fix typo in documentation (#2559)

Co-authored-by: rustybob174 <183678089+rustybob174@users.noreply.github.com>

perfmetrics/scripts/load_tests/python/README.md

@@ -120,7 +120,7 @@ description of files.
 ```
 read_tasks.yaml. 
 
-For more detials on the supported parameters in configs of predefined tasks, 
+For more details on the supported parameters in configs of predefined tasks, 
 please refer to [sample_tasks.yaml]
 * Run the following command:
 ```