Update contributing.md

Author: ws-garcia

docs/contributing.md

@@ -7,9 +7,9 @@ nav_order: 3
 
 I'm grateful that you wish to contribute to this project!
 
-In order to make your contribution happen in the best way, follow this instruction before pull any request:
+In order to make your contribution happen in the best way, follow this instructions before pull any request:
 
 - Open a [enhancement](https://github.com/ws-garcia/VBA-CSV-interface/issues/new?assignees=&labels=enhancement&template=feature_request.md&title=) or [bug report](https://github.com/ws-garcia/VBA-CSV-interface/issues/new?assignees=ws-garcia&labels=bug&template=bug_report.md&title=%5BBug%5D) depending on the case on.
 - Fork the repository and work on your changes.
 - Submit a pull request. 
-- Your changes will be merged, when the review is done.
+- Your changes will be merged, when the review is done.