Add some specific prefix to class 'yfm'

[Marrinka]

[Marrinka]

We have a problem with redefinition of styles because of same class naming ('yfm') from diplodoc/transform and doc-tools (in project styles from the second one are extended, so we have a component with class 'yfm', and after project building styles priorities are mixed). Let's add some specific prefix.

[3y3]

Are you mean, that your project bundles @diplodoc/transform and outdated @doc-tools/transform and there was styles conflict?