Update README with reporting issues guidelines

Author: matks

README.md

@@ -16,8 +16,12 @@ You can find usage examples in the [examples folder](examples/).
 
 Read the [tutorials](https://devdocs.prestashop-project.org/8/webservice/tutorials/prestashop-webservice-lib/) for more.
 
+## Reporting issues
+
+You can report issues with this module in the main PrestaShop repository. [Click here to report an issue][report-issue]. 
+
 ## License
 
 This library is released under the [OSL-3.0 license](LICENSE.md).
 
-
+[report-issue]: https://github.com/PrestaShop/PrestaShop/issues/new/choose