Add Product Hunt social media icon (#6464)

* Social media icons update

* fix URL

* Update README.md

Author: glenn-jocher

README.md

@@ -27,6 +27,10 @@
    <img src="https://github.com/ultralytics/yolov5/releases/download/v1.0/logo-social-twitter.png" width="2%"/>
    </a>
    <img width="2%" />
+   <a href="https://www.producthunt.com/@glenn_jocher">
+   <img src="https://github.com/ultralytics/yolov5/releases/download/v1.0/logo-social-producthunt.png" width="2%"/>
+   </a>
+   <img width="2%" />
    <a href="https://youtube.com/ultralytics">
    <img src="https://github.com/ultralytics/yolov5/releases/download/v1.0/logo-social-youtube.png" width="2%"/>
    </a>
@@ -282,6 +286,10 @@ professional support requests please visit [https://ultralytics.com/contact](htt
         <img src="https://github.com/ultralytics/yolov5/releases/download/v1.0/logo-social-twitter.png" width="3%"/>
     </a>
     <img width="3%" />
+    <a href="https://www.producthunt.com/@glenn_jocher">
+    <img src="https://github.com/ultralytics/yolov5/releases/download/v1.0/logo-social-producthunt.png" width="3%"/>
+    </a>
+    <img width="3%" />
     <a href="https://youtube.com/ultralytics">
         <img src="https://github.com/ultralytics/yolov5/releases/download/v1.0/logo-social-youtube.png" width="3%"/>
     </a>