Adding another FREE API

Adding Scrapingdog.com . It is a FREE web scraper that handles millions of proxies, browsers and CAPTCHAs to provide you with HTML of any web page in a single API call. It also provides Web Scraper for Chrome & Firefox and a software for instant scraping demands.

README.md

@@ -282,7 +282,7 @@ API | Description | Auth | HTTPS | CORS |
 | [QuickChart](https://quickchart.io/) | Generate chart and graph images | No | Yes | Yes |
 | [ReqRes](https://reqres.in/ ) | A hosted REST-API ready to respond to your AJAX requests | No | Yes | Unknown |
 | [ScraperApi](https://www.scraperapi.com) | Easily build scalable web scrapers | `apiKey` | Yes | Unknown |
-| [ScrapingDog](https://www.scrapingdog.com/) | Proxy API for web scraping | `apiKey` | Yes | Unknown |
+| [ScrapingDog](https://www.scrapingdog.com/) | Proxy API for Web scraping | `apiKey` | Yes | Unknown |
 | [ScreenshotAPI.net](https://screenshotapi.net/) | Create pixel-perfect website screenshots | `apiKey` | Yes | Yes |
 | [SHOUTCLOUD](http://shoutcloud.io/) | ALL-CAPS AS A SERVICE | No | No | Unknown |
 | [StackExchange](https://api.stackexchange.com/) | Q&A forum for developers | `OAuth` | Yes | Unknown |