fix(newman-reporter-allure): Update README.md - change flag export to…

… reportDir (fixes #992, via #1057)

packages/newman-reporter-allure/README.md

@@ -24,7 +24,7 @@ To generate Allure results, specify `allure` in Newman's `-r` or `--reporters` o
 
 ```console
 $ newman run <Collection> -e <Environment> -r allure
-$ newman run <Collection> -e <Environment> -r allure --reporter-allure-export <allure-results-out-dir>
+$ newman run <Collection> -e <Environment> -r allure --reporter-allure-resultsDir <allure-results-out-dir>
 ```
 
 Use the option `--reporter-allure-collection-as-parent-suite` to use the collection name as the parent suite title under the _Suites_ view. This helps when you run multiple collections and want to aggregate them in a single report.