Ankur Roy Chowdhury

Fixed a small typo - gradients were being logged twice, instead of once each for gradients and weights, while summarising the logs.

Doesn't open in colab with following error: ``` Could not find StereoVOExample_large_.ipynb in https://api.github.com/repos/gtbook/gtsam-examples/contents/?per_page=100&ref=main ib@https://colab.research.google.com/v2/external/external_polymer_binary.js?vrz=colab-20220912-060049-RC01_473840151:73:164 PF@https://colab.research.google.com/v2/external/external_polymer_binary.js?vrz=colab-20220912-060049-RC01_473840151:1695:75 sja/