Doc: fix fr translation in chords appendix

• Use "Triade" insteag of "Triton" (duh.)

• "Minor 9" should be translated as "Accord mineur de neuvième", or "Neuvième (mineur)" for short, rather than "Neuvième mineure" which would correspond to "Minor 9th"

• Same goes for six- and seven-notes chords, as well as "Minor 6" (which should be translated as "Mineur avec sixte [majeure] ajoutée" rather than "Sixte mineure".

• And, yes, I know many French jazzmen don't bother making the distinction in common lingo. That doesn't mean we shouldn't.

added Patchnew label

Are you sure you want to target translation-staging ie stable/2.20? The correct one should be translation. Anyway, should this go through the usual countdown process? I thought translations are just pushed and testing is applied when merging to staging?

Oh, I thought the process was similar to staging
before master.
OK, pushed onto translation as
3d5333d8

Passes make, make check and a full make doc.

added Patchreview label and removed Patchnew label

removed Patchreview label

closed

Patches touching docs' translations are usually prefixed with "Doc-LL:" or "Web-LL".