docs: fix axis factory method names to match code
docs: fix axis factory method names to match code

ScottLogic/d3fc,jleft/d3-financial-components,d3fc/d3fc,ScottLogic/d3fc,d3fc/d3fc,ColinEberhardt/d3fc,ScottLogic/d3fc,d3fc/d3fc,jleft/d3-financial-components,jleft/d3-financial-components,d3fc/d3fc,ColinEberhardt/d3fc,ColinEberhardt/d3fc