Update logs main index page

Add ruby as supported SDK

Author: solnic

docs/product/explore/logs/getting-started/index.mdx

@@ -197,6 +197,14 @@ To set up Sentry Logs, use the links below for supported SDKs. After it's been s
     url="/platforms/python/logs/"
   />
 
+### Ruby
+
+- <LinkWithPlatformIcon
+    platform="ruby"
+    label="Ruby"
+    url="/platforms/ruby/logs/"
+  />
+
 ## Upcoming SDKs
 
 We're actively working on adding Log functionality to additional SDKs. Check out these GitHub issues for the latest updates: