Merge fix of a broken link from stable into trunk (r442)

git-svn-id: http://opensource.mlba-team.de/svn/xdispatch/trunk@464 9e4c620c-c391-4b63-a7fb-4924991ea895

Tutorial.dox

@@ -346,6 +346,6 @@ There is no need to worry about memory leaks - xdispatch will automatically dele
 
 The examples above showed only some of the functionality and power of libXDispatch. Of course there also is a plean C interface and Qt integration provided within QtDispatch. For further exploration, we recommend browsing the API documentation and having a look at the various unittests.
 
-There is also a lot more concepts to explore. For example you could create your own queues and not only use the automatically provided global queues. For understanding the idea of serial and concurrent queues and the usage of setting a target for a queue, we recommend to read the document <a href="GrandCentral_TB_brief_20090608.pdf">"Apple Technical Brief on Grand Central Dispatch"</a> and have a look at <a href="http://developer.apple.com/library/mac/#documentation/General/Conceptual/ConcurrencyProgrammingGuide/Introduction/Introduction.html#//apple_ref/doc/uid/TP40008091">Apple's Concurrency Programming Guide</a>
+There is also a lot more concepts to explore. For example you could create your own queues and not only use the automatically provided global queues. For understanding the idea of serial and concurrent queues and the usage of setting a target for a queue, we recommend to read the document <a href="http://opensource.mlba-team.de/xdispatch/GrandCentral_TB_brief_20090608.pdf">"Apple Technical Brief on Grand Central Dispatch"</a> and have a look at <a href="http://developer.apple.com/library/mac/#documentation/General/Conceptual/ConcurrencyProgrammingGuide/Introduction/Introduction.html#//apple_ref/doc/uid/TP40008091">Apple's Concurrency Programming Guide</a>
 
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