update docs

CHANGES.md

@@ -5,6 +5,10 @@
 ### BREAKING CHANGES
 
 * GROWI no longer supports plugins with schema version 2
+    * Upgrade [weseek/growi-plugin-lsx](https://github.com/weseek/growi-plugin-lsx) to v3.0.0 or above
+    * Upgrade [weseek/growi-plugin-pukiwiki-like-linker
+](https://github.com/weseek/growi-plugin-pukiwiki-like-linker
+) to v3.0.0 or above
 * The restriction mode of the root page (`/`) will be set 'Public'
 * The restriction mode of the root page (`/`) can not be changed after v 3.5.1