Thread:VisualEditor/Feedback/Add = into the title of a section

For now, the whole title will be wrapped by nowiki tag, as which may break other thing, such as conversion on zh.wikipedia.

Instead of using nowiki tag, as a talk in Wikimania2013, it is recommend to use a space between the title-tag(==) and char-to-be-shown(=), like == =a= ==.