fix(docs): update title for Fact Checker CLI example

Author: kesku

docs/index.mdx

@@ -35,7 +35,7 @@ Each example includes its own setup guide and documentation.
 
 ## 🔧 Examples
 
-### [�� Fact Checker CLI](cookbook/examples/fact-checker-cli/)
+### [🔍 Fact Checker CLI](cookbook/examples/fact-checker-cli/)
 Command-line tool that analyzes claims and articles for factual accuracy using Sonar's grounded search.
 - Structured claim analysis with confidence ratings
 - Source citation tracking and verification