Fix typo in lua_api.txt

Zeno- · Zeno- · commit 06207ac5508a · 2014-12-15T01:09:17.000+10:00
diff --git a/doc/lua_api.txt b/doc/lua_api.txt
@@ -2560,7 +2560,7 @@ Node definition (register_node)
     ^ Node destructor; always called after removing node
     ^ default: nil
 
-    after_place_node = func(pos, placer, itemstack, pointed_thing),
+    after_place_node = func(pos, placer, itemstack, pointed_thing)
     ^ Called after constructing node when node was placed using
       minetest.item_place_node / minetest.place_node
     ^ If return true no item is taken from itemstack
