update for nitpick comments

Author: yuehaii

examples/roots_client/main.go

@@ -156,7 +156,7 @@ func main() {
 
 	// mock the root change
 	if err := mcpClient.RootListChanges(ctx); err != nil {
-		log.Printf("fail to notify root list change: %v", err)
+		log.Printf("failed to notify root list change: %v", err)
 	}
 
 	// Keep running until cancelled by signal

examples/roots_http_client/main.go

@@ -115,14 +115,14 @@ func main() {
 
 	// mock the root change
 	if err := mcpClient.RootListChanges(ctx); err != nil {
-		log.Printf("fail to notify root list change: %v", err)
+		log.Printf("failed to notify root list change: %v", err)
 	}
 
 	// call server tool
 	request := mcp.CallToolRequest{
 		Params: mcp.CallToolParams{
 			Name:      "roots",
-			Arguments: map[string]any{"testonly": "yes"},
+			Arguments: map[string]any{},
 		},
 	}
 	result, err := mcpClient.CallTool(ctx, request)

examples/roots_server/main.go

@@ -33,7 +33,7 @@ func main() {
 	// Add a simple tool to test roots list
 	mcpServer.AddTool(mcp.Tool{
 		Name:        "roots",
-		Description: "Returns the current list of roots from the server",
+		Description: "Requests and returns the current list of roots from the connected client",
 		InputSchema: mcp.ToolInputSchema{
 			Type:       "object",
 			Properties: map[string]any{},