How to display field description right after field label?
The module called Better field descriptions might be the one you are looking for. It describes as following:

Better field descriptions makes it possible to add themeable descriptions to fields in forms.

Would your customers like to write their own descriptions, but can't or won't, since they then need permission to manage the fields in the content type?
Would you like to show the description above the field or even between the title and the field?


The module Label help might also be helpful.