simplify .toString()

Author: maxim5

src/io/routekit/ConstToken.java

@@ -28,7 +28,7 @@ public CharBuffer buffer() {
 
     @Override
     public String toString() {
-        return "ConstToken[" + token + "]";
+        return "ConstToken[%s]".formatted(token);
     }
 
     @Override

src/io/routekit/SeparableVariableToken.java

@@ -21,6 +21,6 @@ public int match(CharBuffer buffer) {
 
     @Override
     public String toString() {
-        return "SeparableVariableToken[" + name() + "]";
+        return "SeparableVariableToken[%s]".formatted(name());
     }
 }

src/io/routekit/WildcardToken.java

@@ -14,6 +14,6 @@ public int match(CharBuffer buffer) {
 
     @Override
     public String toString() {
-        return "WildcardToken[" + name() + "]";
+        return "WildcardToken[%s]".formatted(name());
     }
 }