minor #16188 [Lock] docs(lock): fix typo in symfony lock documentation (JacquesDurand)

This PR was submitted for the 5.4 branch but it was merged into the 4.4 branch instead.

Discussion
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[Lock] docs(lock): fix typo in symfony lock documentation

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Commits
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ca12801 docs(lock): fix typo in symfony lock documentation

Author: javiereguiluz

lock.rst

@@ -190,7 +190,7 @@ Locking a Dynamic Resource
 
 Sometimes the application is able to cut the resource into small pieces in order
 to lock a small subset of process and let other through. In our previous example
-with see how to lock the ``$pdf->getOrCreatePdf('terms-of-use')`` for everybody,
+we've seen how to lock the ``$pdf->getOrCreatePdf('terms-of-use')`` for everybody,
 now let's see how to lock ``$pdf->getOrCreatePdf($version)`` only for
 processes asking for the same ``$version``::