invoice-pdf-api added to the list

https://rapidapi.com/mankatomek/api/invoice-pdf-api

README.md

@@ -761,6 +761,7 @@ API | Description | Auth | HTTPS | CORS |
 | [IG](https://labs.ig.com/gettingstarted) | Spreadbetting and CFD Market Data | `apiKey` | Yes | Unknown |
 | [Indian Mutual Fund](https://www.mfapi.in/) | Get complete history of India Mutual Funds Data | No | Yes | Unknown |
 | [Intrinio](https://intrinio.com/) | A wide selection of financial data feeds | `apiKey` | Yes | Unknown |
+| [invoice-pdf-api](https://rapidapi.com/mankatomek/api/invoice-pdf-api) | Simple API for genering inovices and generating PDF from HTML | No | Yes | no |
 | [Klarna](https://docs.klarna.com/klarna-payments/api/payments-api/) | Klarna payment and shopping service | `apiKey` | Yes | Unknown |
 | [MercadoPago](https://www.mercadopago.com.br/developers/es/reference) | Mercado Pago API reference - all the information you need to develop your integrations | `apiKey` | Yes | Unknown |
 | [Mono](https://mono.co/) | Connect with users’ bank accounts and access transaction data in Africa | `apiKey` | Yes | Unknown |