Adds commands for viewing placeholders on a sign

src/main/java/net/knarcraft/placeholdersigns/config/PlaceholderSignMessage.java

@@ -34,14 +34,14 @@ public enum PlaceholderSignMessage implements TranslatableMessage {
     SUCCESS_SIGN_CONTENTS,
 
     /**
-     * The string displayed when a sign is confirmed to be glowing
+     * The string displayed when a sign property is confirmed
      */
-    GLOWING_CONFIRM,
+    SIGN_PROPERTY_CONFIRM,
 
     /**
-     * The string displayed when a sign is not glowing
+     * The string displayed when a sign property is denied
      */
-    GLOWING_DENY,
+    SIGN_PROPERTY_DENY,
     ;
 
     @Override