Update README

Author: christopherdro

README.md

@@ -212,7 +212,7 @@ const styles = StyleSheet.create({
 | Param | Type | Note |
 |---|---|---|
 | `html` | `string` |  **iOS and Android Only:** HTML string to print
-| `fileName` | `string` | Custom Filename excluding .pdf extension or remote file url NOTE: iOS only supports https protocols
+| `filePath` | `string` | Local or remote file url NOTE: iOS only supports https protocols for remote
 | `printerURL` | `string` | **iOS Only:** URL returned from `selectPrinterMethod()`
 | `isLandscape` | `bool` | Landscape print; default value is false
 | `jobName` | `string` | **Android Only:** Name of printing job; default value is "Document"