docs: modify readme file

lua/Trans/component/offline/Translation.lua

@@ -1,6 +1,6 @@
 local M = {}
 
-M.component = function(field)
+M.component = function(field, max_size)
     if field.translation then
         local ref = {
             { '中文翻译', 'TransRef' }
@@ -12,8 +12,13 @@ M.component = function(field)
             emptyline = true,
             needformat = true,
         }
+        local size = 0
         for trans in vim.gsplit(field.translation, '\n', true) do
+            size = size + 1
             table.insert(translations, trans)
+            if size == max_size then 
+                break
+            end
         end
 
         return { ref, translations }