Tidy up BaseGaussianLikelihood docs
Tidy up BaseGaussianLikelihood docs

roystgnr/queso,briadam/queso,roystgnr/queso,roystgnr/queso,briadam/queso,briadam/queso,briadam/queso,roystgnr/queso,roystgnr/queso,briadam/queso,roystgnr/queso