docs: add llm txt (#5009)

platform/docs/docs/development/testing.md

@@ -1,6 +1,8 @@
 ---
 sidebar_position: 7
 sidebar_label: Testing
+title: Testing OHIF
+summary: Comprehensive guide to OHIF's testing approach, covering unit tests and end-to-end tests with detailed instructions for running them, explanation of test data management, and an overview of the project's testing philosophy and best practices.
 ---
 
 # Running Tests for OHIF