update minor typo (#278)

Author: candur

source/solutions-library/fin-services-agentic-portfolio.txt

@@ -72,7 +72,7 @@ Reference Architectures
 The solution is composed of three agents and two applications: 
 
 - Market analysis agent
-- Market new agent
+- Market news agent
 - Market assistant agent
 - Data ingestion application
 - Market insight generation application