Modifies H1 title for better SEO (#390)

Author: kosabogi

docs/reference/edot-python/setup/manual-instrumentation.md

@@ -13,7 +13,7 @@ products:
   - id: edot-sdk
 ---
 
-# Manual instrumentation for Python with EDOT SDK
+# Manual instrumentation for Python with Elastic OpenTelemetry SDK
 
 Learn how to manually instrument Python applications using the {{edot}} Python SDK to add spans, metrics, and custom attributes. The following instructions require auto-instrumentation with OpenTelemetry to have been added to your application per [Setup](/reference/edot-python/setup/index.md).