Error in documentation

[gapplef]

logl_args, ptform_args (parameters of NestedSampler/DynamicNestedSampler) are explained as dict in documentation, which not correct in my test.

logl_args : dict, optional
    Additional arguments that can be passed to loglikelihood.

logl_kwargs : dict, optional
    Additional keyword arguments that can be passed to loglikelihood.

ptform_args : dict, optional
    Additional arguments that can be passed to prior_transform.

ptform_kwargs : dict, optional
    Additional keyword arguments that can be passed to prior_transform.

[joshspeagle]

Good catch -- that's just me copy-pasting too much when writing all these out. I'll fix it with the next release.