Duplicated paragraph in documentation

[dbitouze]

The following paragraph appears twice in the documentation (pages 5 and 21):

When the node shaper is used, experimental support for OpenType variable fonts has been added. To use them, set the font feature axis to a comma separated list of axis names and values. (E.g. axis=weight=600) The supported axis names and value range depend on the font (see page 21).

(BTW, maybe due to my lack of knowledge about (variable) fonts, I find the luaotfload documentation not very clear about axis).