seo corrections

                                                                   
|Q            |A                                                  |
|---          |---                                                |
|Bug Fix?     |n                                                  |
|New Feature? |n                                                  |
|BC Breaks?   |n                                                  |
|Deprecations?|n                                                  |
|Tests Pass?  |n                                                  |
|Fixed Tickets|https://github.com/symfony-cmf/SeoBundle/issues/146|
|License      |MIT                                                |
|Doc PR       |                                                   |
                                                                   


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Could you please put this into a tip directive?