fix(cmd/aminoscan): set len=0 in a slice initialization (#2971)

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The intention here should be to initialize a slice with a capacity of
`len(args)` rather than initializing the length of this slice.

The online demo: https://go.dev/play/p/q1BcVCmvidW

tm2/pkg/amino/cmd/aminoscan/colors.go

@@ -28,7 +28,7 @@ func treat(s string, color string) string {
 }
 
 func treatAll(color string, args ...interface{}) string {
-	parts := make([]string, len(args))
+	parts := make([]string, 0, len(args))
 	for _, arg := range args {
 		parts = append(parts, treat(fmt.Sprintf("%v", arg), color))
 	}