Add Tenders in Poland (#2307)

README.md

@@ -245,6 +245,7 @@ API | Description | Auth | HTTPS | CORS |
 | [ORB Intelligence](https://api.orb-intelligence.com/docs/) | Company lookup | `apiKey` | Yes | Unknown |
 | [Smartsheet](https://smartsheet.redoc.ly/) | Allows you to programmatically access and Smartsheet data and account information | `OAuth` | Yes | No |
 | [SwiftKanban](https://www.digite.com/swiftkanban/) | Kanban software, Visualize Work, Increase Organizations Lead Time, Throughput & Productivity | `apiKey` | Yes | Unknown |
+| [Tenders in Poland](https://tenders.guru/pl/api) | Get data for procurements in Poland in JSON format | No | Yes | Unknown |
 | [Trello](https://developers.trello.com/) | Boards, lists and cards to help you organize and prioritize your projects | `OAuth` | Yes | Unknown |
 
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