Update deployment.rst

Fix 404 not found
the link was:
- http://api.symfony.com/3.4/Symfony/Component/HttpKernel/Kernel/Kernel.html#method_getProjectDir> (404)
And I tried to make it like this:
-http://api.symfony.com/3.4/Symfony/Component/HttpKernel/Kernel.html#method_getProjectDir (working)

But since I don't know how links are generated from the doc I guess that removing the useless "Kernel" and ">" can do the job.

Author: bricelalu

deployment.rst

@@ -217,7 +217,7 @@ Deployments not Using the ``composer.json`` File
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 Symfony applications provide a ``kernel.project_dir`` parameter and a related
-:method:`Symfony\\Component\\HttpKernel\\Kernel\\Kernel::getProjectDir>` method.
+:method:`Symfony\\Component\\HttpKernel\\Kernel::getProjectDir` method.
 You can use this method to perform operations with file paths relative to your
 project's root directory. The logic to find that project root directory is based
 on the location of the main ``composer.json`` file.