minor #4985 Fixed a minor typo (javiereguiluz)

This PR was merged into the 2.6 branch.

Discussion
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Fixed a minor typo

Commits
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026a1ea Minor grammar fix
151bcc0 Fixed a minor typo

Author: weaverryan

components/filesystem/introduction.rst

@@ -8,7 +8,7 @@ The Filesystem Component
 
 .. tip::
 
-    A lock handler feature was introduce in symfony 2.6.
+    The lock handler feature was introduced in symfony 2.6.
     :doc:`See the documentation for more information </components/filesystem/lock_handler>`.
 
 Installation