May need to use toJSONString on @Param values

[Will Reichert]

The json output format breaks when a @Param value contains a [ or {.
The issue exists in 1.21 and 1.22-SNAPSHOT (built from master)
I was able to fix it by changing line 195
in ./jmh-core/src/main/java/org/openjdk/jmh/results/format/JSONResultFormat.java
to the following
sb.append(toJsonString(params.getParam(k)));

recreate benchmark (starting with the maven example on
https://openjdk.java.net/projects/code-tools/jmh/):
package org.sample;
import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.*;
@State(Scope.Benchmark)
public class MyBenchmark {
    @Param({"[broken]","{broken}"})
    public String value;
    @Benchmark
    public void testMethod() {
        // This is a demo/sample template for building your JMH benchmarks.
Edit as needed.
        // Put your benchmark code here.
    }
}

command: java -jar target/benchmarks.jar -f 1 -i 1 -wi 0 -r 10 -rf json

What is the best way to propose this change to JSONResultFormat?

--Will