#362 ITDESTIMATOR typo in documentation

[Katharina Pollack]

In https://amtoolbox.org/amt-1.6.0/doc/common/itdestimator.php it says

Impulse responses (IRs) as a SOFA structure using the SingleFreeFieldHRIR convention. The ITDs will be estimated for each IR in sofa.Data.IR.

but I cannot find "SingleFreeFieldHRIR" in https://www.sofaconventions.org/mediawiki/index.php/SOFA_specifications - should it may be "SimpleFreeFieldHRIR" ?