pd4fonts.properties file generated by PDF extension is missing an important newline

Example file:
```

1. generated by the Lucee PDF Extension based on the files in this directoryArial=arial.ttf
   Arial\ Black=arial_black.ttf
   Arial\ Bold=arial_bold.ttf
   ```
   There needs to be a newline after "this directory". The relevant code is at https://github.com/lucee/extension-pdf/blob/303a4cd528949a81db210b9ca1bd5a84f98e9956/source/java/src/org/lucee/extension/pdf/PDFDocument.java#L596