fixed documentation revision for alembic changes & changelog update

changelog.md

@@ -1,6 +1,15 @@
 # Changelog
 Documenting updates to ARTEMiS, to be updated every time the master branch is pushed to.
 
+## 20240408
+### System
++ Modified the game specific documentation
+
+## 20240407
+### Maimai
++ Support maimai DX International [#118](https://gitea.tendokyu.moe/Hay1tsme/artemis/pulls/118) (Thanks beerpsi!)
++ Fixed the maimai DX reboot time from config [#120](https://gitea.tendokyu.moe/Hay1tsme/artemis/pulls/120) (Thanks topty!)
+
 ## 20240318
 ### CXB
 + Fixing handle_data_shop_list_detail_request for Sunrise S1

docs/game_specific_info.md

@@ -9,7 +9,15 @@ using the megaime database. Clean installations always create the latest databas
 To upgrade the core database and the database for every game, execute:
 
 ```shell
-python dbutils.py autoupgrade
+python dbutils.py upgrade
+```
+
+If you are using the old master branch that was not setup with alembic, make sure to do the following steps in order:
+- Pull down latest master/develop
+- Update core.yaml
+- Back up your existing database
+```shell
+python dbutils.py migrate
 ```
 
 # Table of content