Fix non-empty event values in JSONGenerator (SkriptLang#7656)

* init commit

* update version

Author: Efnilite

src/main/java/ch/njol/skript/doc/JSONGenerator.java

@@ -36,7 +36,7 @@ public class JSONGenerator extends DocumentationGenerator {
 	/**
 	 * The current version of the JSON generator
 	 */
-	public static final Version JSON_VERSION = new Version(1, 0);
+	public static final Version JSON_VERSION = new Version(1, 1);
 
 	private static final Gson GSON = new GsonBuilder()
 		.disableHtmlEscaping()
@@ -200,6 +200,10 @@ private static JsonArray getEventValues(SkriptEventInfo<?> info) {
 			}
 		}
 
+		if (eventValues.isEmpty()) {
+			return null;
+		}
+
 		JsonArray array = new JsonArray();
 		for (JsonObject eventValue : eventValues) {
 			array.add(eventValue);