Add additional checkstyle checks

By: md_5 <git@md-5.net>

paper-api/src/main/java/org/bukkit/map/MinecraftFont.java

@@ -9,6 +9,7 @@ public class MinecraftFont extends MapFont {
 
     private static final int spaceSize = 2;
 
+    // CHECKSTYLE:OFF
     private static final String fontChars =
         " !\"#$%&'()*+,-./0123456789:;<=>?" +
         "@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_" +
@@ -278,6 +279,7 @@ public class MinecraftFont extends MapFont {
         /* 254 */  {0,0,60,60,60,60,0,0},
         /* 255 */  {0,0,0,0,0,0,0,0},
     };
+    // CHECKSTYLE:ON
 
     /**
      * A static non-malleable MinecraftFont.