fix(docs): removed publishing actors link from homepage (#460)

Author: monkey-denky

content/docs/homepage_content.json

@@ -171,10 +171,6 @@
             "href": "https://crawlee.dev/docs/quick-start",
             "isExternalLink": true
         },
-        {
-            "cardItem": "Publish your actor",
-            "href": "/actors/publishing"
-        },
         {
             "cardItem": "Apify SDK API reference",
             "href": "https://sdk.apify.com/api/apify",