minor #10652 Grammar fix (NathanGiesbrecht)

This PR was submitted for the master branch but it was merged into the 2.8 branch instead (closes #10652).

Discussion
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Grammar fix

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Commits
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6a9821e Grammar fix

Author: javiereguiluz

create_framework/http_foundation.rst

@@ -264,7 +264,7 @@ explicitly trust your reverse proxies by calling ``setTrustedProxies()``::
 
 So, the ``getClientIp()`` method works securely in all circumstances. You can
 use it in all your projects, whatever the configuration is, it will behave
-correctly and safely. That's one of the goal of using a framework. If you were
+correctly and safely. That's one of the goals of using a framework. If you were
 to write a framework from scratch, you would have to think about all these
 cases by yourself. Why not using a technology that already works?