Documenting createAccessDeniedException() method

Updating documentation to reflect the changes added in https://github.com/symfony/symfony/pull/9405.
Updating references to match doc format
Adding versionadded detail
Wrapping line
feature #3486 Documenting createAccessDeniedException() method (klaussilveira)

This PR was merged into the master branch.

Discussion
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Documenting createAccessDeniedException() method

Updating documentation to reflect the changes added in https://github.com/symfony/symfony/pull/9405.

| Q             | A
| ------------- | ---
| Doc fix?      | no
| New docs?     | yes (symfony/symfony#9405)
| Applies to    | 2.5+
| Fixed tickets |

Commits
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da6002d Wrapping line
b1b9090 Adding versionadded detail
53f156c Updating references to match doc format
6fd3f93 Documenting createAccessDeniedException() method