Fix survey_builder.mdx: remove stale link, Polly reference, update examples link

- Remove stale /getting-started/build demo link
- Remove cross-reference to Polly (chat) page
- Add tutorials/examples link to expectedparrot.com/products/polly/use-cases

https://claude.ai/code/session_019UP4LwJZXesvG3uxMRJ5j4

Author: claude

docs/mintlify-migration/en/latest/survey_builder.mdx

@@ -6,11 +6,9 @@ title: "Survey Builder"
 
 Survey Builder is a user-friendly, no-code application for launching surveys and gathering responses from AI agents and human respondents. It is fully integrated with EDSL and available at your account, allowing you to seamlessly design questions and agents, and analyze, visualize and share your results.
 
-A clickable demo of the survey builder is available [here](https://www.expectedparrot.com/getting-started/build).
+Tutorials and examples are available [here](https://www.expectedparrot.com/products/polly/use-cases).
 
-*If you are looking for information about Polly, a chat application for interacting with AI agents, please see the* [Polly (chat)](/en/latest/polly#polly) *page.*
-
-*If you are looking for information about EDSL code methods for launching surveys with human respondents, please see the* [Humanize](/en/latest/humanize#humanize) *and* [Prolific studies](/en/latest/prolific#prolific) *pages.* *For information about building and launching surveys interactively, see the sections below.*
+*If you are looking for information about EDSL code methods for launching surveys with human respondents, please see the* [Humanize](/en/latest/humanize#humanize) *and* [Prolific studies](/en/latest/prolific#prolific) *pages.*
 
 ## Features