How can I change the rich-text editor to remove the "Heading 1" option I want to remove the option to add a H1 from the dropdown in the Redactor rich-text component. I have edited the Standard.json file in craft>config>redactor to the below but it still hasn't done the job: 

{
    "buttons": ["format","bold","italic","lists","link","horizontalrule"],
    "plugins": ["source","fullscreen"],
    "formattingTags": ["h2","h3","p","blockquote"]
}


I followed instructions from this page, but it looks like "formattingTags" doesn't work. Anyone know how to fix this?
formattingTags is not the correct syntax.

You should be using formatting instead, as per my answer on this question.