Update README.md

README.md

@@ -73,7 +73,7 @@ Each data is consist of 2 fields, "text" and "metadata".
   * "Year": The year when the law is promulgated.
   * "PromulgateMonth/Day": The Month/Day when the law is promulgated.
   * "LawNum": The string of the (numeric) name of the law.
-  * "category_id": The integer representing the category where the law is categorized. The categories is obtained [HERE](https://laws.e-gov.go.jp/bulkdownload/#)
+  * "category_id": The integer representing the category where the law is categorized. The categories is found in [category.json](category.json)
 
 # Data Split