[2.1.0] Fix hex color

Author: ItsFlicker

project/runtime-bukkit/src/main/java/me/arasple/mc/trchat/util/color/HexUtils.java

@@ -247,9 +247,9 @@ private static int findStop(String content, int searchAfter) {
     }
 
     private static String cleanHex(String hex) {
-        if (hex.startsWith("<") || hex.startsWith("{")) {
-            return hex.substring(1, hex.length() - 1);
-        } else if (hex.startsWith("&")) {
+        if (hex.startsWith("&{")) {
+            return hex.substring(2, hex.length() - 1);
+        } else if (hex.startsWith("&#")) {
             return hex.substring(1);
         } else {
             return hex;