[[ revPDFPrinter ]] Add Android to "open printing to PDF" dictionary entry

This patch updates the dictionary entry of the "open printing to pdf" command to indicate support on Android devices

Author: livecodeian

docs/dictionary/command/open-printing-to-pdf.lcdoc

@@ -10,7 +10,7 @@ currently configured printer.
 
 Introduced: 4.5
 
-OS: mac, windows, linux, ios
+OS: mac, windows, linux, ios, android
 
 Platforms: desktop, mobile