Fix custom error types link in typescript documentation

packages/chord-symbol/types/index.d.ts

@@ -318,7 +318,7 @@ type RendererConfiguration = {
  * For maximum compatibility, your best bet is to always rely on the existing chord object structure.
  * - To fail the parsing, throw an exception and it will use the Error API.
  * If you want to be able to filter your exception in error handling, or to pass the chord object in its current state, use
- * [custom error types]{@link https://github.com/no-chris/chord-symbol/blob/master/src/helpers/ChordParsingError.js}
+ * [custom error types]{@link https://github.com/no-chris/chord-symbol/blob/master/packages/chord-symbol/src/helpers/ChordParsingError.js}
  *
  * **Rendering filter**
  * - If the purpose of your rendering filter is to change the text output of `ChordSymbol`,