parisc: hardware: Update references to parisc website

The PA-RISC Linux project web page is now hosted at
https://parisc.wiki.kernel.orgSigned-off-by: Helge Deller <deller@gmx.de>

arch/parisc/kernel/hardware.c

@@ -6,7 +6,8 @@
  * 
  *    Based on the document "PA-RISC 1.1 I/O Firmware Architecture 
  *    Reference Specification", March 7, 1999, version 0.96.  This
- *    is available at http://parisc-linux.org/documentation/
+ *    is available at
+ *    https://parisc.wiki.kernel.org/index.php/Technical_Documentation
  *
  *    Copyright 1999 by Alex deVries <alex@onefishtwo.ca>
  *    and copyright 1999 The Puffin Group Inc.