mistake in the documentation about "set measurement" > skewness

[grimper]

Hello all,

In the documentation page explaining the measurement of skewness and kurtosis by the built-in measure function, it refers to the  "moment calculator" plugin.
However, I found it is somehow misleading. Because in the built-in skewness and kurtosis measurement is measuring the shape of the histogram while the "moment calculator" plugin is measuring the image spatial moment (the shape of the image).

Maybe it would be better to mention it, otherwise the user would find it strange to have different measurement results.

Zong