added README note on fork

Author: Helveg

README.md

@@ -25,10 +25,13 @@ Pagination and filtering helper method for TypeORM repositories or query builder
 npm install nestjs-paginate
 ```
 
-| ⚠️ **TypeORM appears unmaintained.**                        |
-|-------------------------------------------------------------|
+| ⚠️ **TypeORM appears unmaintained.**                       |
+|------------------------------------------------------------|
 | Please `npm i typeorm@npm:@helveg/typeorm@^0.3.21` instead. |
 
+The fork contains several fixes used in this package. In some rare edge
+cases this package might not work without it.
+
 ## Usage
 
 ### Example