Add Collective APIs Site in the Alternative sites (#3004)

* Add Collective APIs Site in the Alternative sites

site: https://www.collective-api.ml

* Update Collective APIs link

README.md

@@ -46,7 +46,8 @@
     <a href="https://free-apis.github.io">Free APIs</a> •
     <a href="https://devresourc.es/tools-and-utilities/public-apis">Dev Resources</a> •
     <a href="https://www.public-apis.ml">Public APIs Site</a> •
-    <a href="https://apihouse.vercel.app">Apihouse</a>
+    <a href="https://apihouse.vercel.app">Apihouse</a> •
+    <a href="https://collective-api.vercel.app/">Collective APIs</a> 
 </div>
 
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