[BUGFIX] Correct link to Julien Pauli´s blog post (#139)

index.md

@@ -15,7 +15,7 @@ Why is this useful?
 - Maybe you want to see some statistics right from the console
 - And many more...
 
-Note that, unlike APCu and Opcache, the file status cache is per-process rather than stored in shared memory. This means that running `stat:clear` against PHP-FPM will only affect whichever FPM worker responds to the request, not the whole pool. [Julien Pauli has written a post](http://blog.jpauli.tech/2014/06/30/realpath-cache.html) with more details on how the file status cache operates.
+Note that, unlike APCu and Opcache, the file status cache is per-process rather than stored in shared memory. This means that running `stat:clear` against PHP-FPM will only affect whichever FPM worker responds to the request, not the whole pool. [Julien Pauli has written a post](http://blog.jpauli.tech/2014-06-30-realpath-cache-html/) with more details on how the file status cache operates.
 
 Compatibility
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