Replace dashboard overview screenshot (#3)

Updated dashboard overview screenshot in README.

Author: RyanTech00

README.md

@@ -4,7 +4,7 @@
 
 # claude-telemetry
 
-<img src="docs/screenshot-overview.png" alt="Dashboard Overview" width="800">
+<img src="docs/screenshot-overview1.png" alt="Dashboard Overview" width="800">
 
 **Centralized Claude Code usage tracking across multiple PCs**