fix: hyphenated compound adjective real world -> real-world for clarity

Author: sumitaryal

docs/index.md

@@ -6,7 +6,7 @@ The [OpenAI Agents SDK](https://github.com/openai/openai-agents-python) enables
 -   **Handoffs**, which allow agents to delegate to other agents for specific tasks
 -   **Guardrails**, which enable the inputs to agents to be validated
 
-In combination with Python, these primitives are powerful enough to express complex relationships between tools and agents, and allow you to build real world applications without a steep learning curve. In addition, the SDK comes with built-in **tracing** that lets you visualize and debug your agentic flows, as well as evaluate them and even fine-tune models for your application.
+In combination with Python, these primitives are powerful enough to express complex relationships between tools and agents, and allow you to build real-world applications without a steep learning curve. In addition, the SDK comes with built-in **tracing** that lets you visualize and debug your agentic flows, as well as evaluate them and even fine-tune models for your application.
 
 ## Why use the Agents SDK