Possible typo in IndexKernel documentation

[parrangoiz]

The IndexKernel documentation says that raw_var is the element-wise log of the $\mathbf{v}$ vector. If I'm not mistaken it is actually the softplus of $\mathbf{v}$ instead, assuming the default constraint (Positive). Maybe a bit fastidious but this threw me for a spin when I was trying to manually reconstruct the task covariance matrix by hand from the factors and the diagonal.

[gpleiss]

Good catch. Mind submitting a PR with the fix?

[parrangoiz]

Sure no problem! First wanted to double check I was right since I'm new to the library.