move migrations dir

.env

@@ -7,7 +7,7 @@ DATABASE_URL=mysql://storyteller:password@localhost/storyteller
 # Diesel-cli reads this for the migration directory to use.
 # We've renamed it so the migrations are sorted near the top of the project directory tree
 # (since they kind of serve as documentation)
-MIGRATION_DIRECTORY=_mysql/migrations/
+MIGRATION_DIRECTORY=_sql/migrations/
 
 # SQLX normally requires a live database to reflect upon at build time.
 # This setting turns that on and requires a `sql-data.json` cache file instead.