Change max pinned answers from 3 to 10

Author: Andrew1031

application/src/main/java/org/togetherjava/tjbot/features/help/PinAnswerCommand.java

@@ -12,7 +12,7 @@
 
 public final class PinAnswerCommand extends BotCommandAdapter implements MessageContextCommand {
     private static final String COMMAND_NAME = "pin-answer";
-    private static final int MAX_PINNED_ANSWERS = 3;
+    private static final int MAX_PINNED_ANSWERS = 10;
     private int count = 0;
 
     public PinAnswerCommand() {