update README

docs/kanji/wanikani.md

@@ -19,6 +19,10 @@
 
 ### 碑
 
+[55 - stature](https://www.wanikani.com/kanji/%E8%84%8A), セキ せ せい
+
+- [Stroke order and direction](https://jisho.org/search/%E8%84%8A%20%23kanji) for this, [in Chinese](https://www.mdbg.net/chinese/dictionary?page=worddict&wdrst=0&wdqb=%E8%84%8A), is a little different.
+
 [56 - tombstone](https://www.wanikani.com/kanji/%E7%A2%91), ヒ いしぶみ
 
 - <ruby>碑文<rt>ひぶん</rt></ruby>