README.md: Add notes about unsafe fixes

README.md

@@ -15,12 +15,12 @@ Supports checking the validity of the following metadata elements:
 Supports fixing the following metadata issues:
 
 - Leading, trailing, and excessive whitespace
+- Invalid multi-value separators ("|") using `--unsafe-fixes`
 
 ## Todo
 
 - Reporting / summary
 - Real logging
-- Fix invalid multi-value separators? Check if there are any valid cases of "|" in the database
 
 ## License
 This work is licensed under the [GPLv3](https://www.gnu.org/licenses/gpl-3.0.en.html).