minor #13737 [HttpFoundation] Fix getHost and getPort functions in docblock (jwpage)

This PR was submitted for the master branch but it was merged into the 2.3 branch instead (closes #13737).

Discussion
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[HttpFoundation] Fix getHost and getPort functions in docblock

This fixes the incorrect  references to the functions `getClientHost` and `getClientPort` in the docblock for Request::setTrustedHeaderName.

| Q             | A
| ------------- | ---
| Fixed tickets | none
| License       | MIT

Commits
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1ae9f9c [HttpFoundation] Fix getHost and getPort functions in docblock

Author: fabpot

src/Symfony/Component/HttpFoundation/Request.php

@@ -575,8 +575,8 @@ public static function getTrustedHosts()
      * The following header keys are supported:
      *
      *  * Request::HEADER_CLIENT_IP:    defaults to X-Forwarded-For   (see getClientIp())
-     *  * Request::HEADER_CLIENT_HOST:  defaults to X-Forwarded-Host  (see getClientHost())
-     *  * Request::HEADER_CLIENT_PORT:  defaults to X-Forwarded-Port  (see getClientPort())
+     *  * Request::HEADER_CLIENT_HOST:  defaults to X-Forwarded-Host  (see getHost())
+     *  * Request::HEADER_CLIENT_PORT:  defaults to X-Forwarded-Port  (see getPort())
      *  * Request::HEADER_CLIENT_PROTO: defaults to X-Forwarded-Proto (see getScheme() and isSecure())
      *
      * Setting an empty value allows to disable the trusted header for the given key.