add topic reply notice

resources/lang/en/forum.php

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+<?php
+
+return [
+    'topic' => [
+        'replied_notify_subject' => 'The topic has a new reply',
+        'replied_notify_body' => 'Your topic：:topic_subject has a new reply.',
+    ],
+    'post' => [
+        'edited_notify_subject' => 'Post reply was modified',
+        'edited_notify_body' => 'Your reply to topic: :topic_subject was modified by: :editor.',
+    ]
+];

resources/lang/zh_CN/forum.php

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+<?php
+
+return [
+    'topic' => [
+        'replied_notify_subject' => '帖子有了新回复',
+        'replied_notify_body' => '你的帖子：:topic_subject 收到了新的回复。',
+    ],
+    'post' => [
+        'edited_notify_subject' => '帖子回复被修改',
+        'edited_notify_body' => '你在帖子：:topic_subject 的回复被：:editor 修改。',
+    ]
+];

resources/lang/zh_TW/forum.php

@@ -0,0 +1,12 @@
+<?php
+
+return [
+    'topic' => [
+        'replied_notify_subject' => '帖子有了新回復',
+        'replied_notify_body' => '你的帖子：:topic_subject 收到了新的回復。',
+    ],
+    'post' => [
+        'edited_notify_subject' => '帖子回復被修改',
+        'edited_notify_body' => '你在帖子：:topic_subject 的回復被：:editor 修改。',
+    ]
+];