[model card] : fix Geotrend/bert-base-15lang-cased
Author: amineabdaoui
Pull request: yes
Labels: name: model card

@julien-c it's me again.

The table in [Geotrend/bert-base-15lang-cased](https://huggingface.co/Geotrend/bert-base-15lang-cased) is badly formatted even if it looks good on [Github](https://github.com/huggingface/transformers/blob/master/model_cards/Geotrend/bert-base-15lang-cased/README.md).

I guess I have to add a **double line break**.

Thanks !

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Comments:
we use marked.js as a markdown parser so rendering should be pretty close to GitHub in general but there can always be some small inconsistencies