updates notes for changes to Object Tracking models
"* New Table of Contents heading:\n",
" * Replace [`Tabular and Feature Models`](https://developers.arcgis.com/python/api-reference/arcgis.learn.toc.html#tabular-and-feature-data-models) with [`Feature, Tabular and Timeseries Models`](https://developers.arcgis.com/python/api-reference/arcgis.learn.toc.html#feature-tabular-and-timeseries-models)\n",
"* New models:\n",
- " * [`Object Tracker Models`](https://developers.arcgis.com/python/api-reference/arcgis.learn.toc.html#object-tracker-models)\n",
+ " * [`Object Tracking Models`](https://developers.arcgis.com/python/api-reference/arcgis.learn.toc.html#object-tracking-models)\n",
" * [`SiamMask`](https://developers.arcgis.com/python/api-reference/arcgis.learn.toc.html#siammask)\n",
+ " * [`ObjectTracker`](https://developers.arcgis.com/python/api-reference/arcgis.learn.toc.html#objecttracker)\n",
" * [`Track`](https://developers.arcgis.com/python/api-reference/arcgis.learn.toc.html#tracker)\n",
"* Adds cell size ranges and output units to trainied models (`Esri Model Definitions`)\n",
"* Adds `monitor` parameter to `fit()` methods of models for use with `early_stopping` and `checkpoint`\n",
" * Adds [`load()`](https://developers.arcgis.com/python/api-reference/arcgis.learn.toc.html#arcgis.learn.MLModel.load) method\n",
" * Adds cabability to [`save()`](https://developers.arcgis.com/python/api-reference/arcgis.learn.toc.html#arcgis.learn.MLModel.save) method to allow saving model without data input\n",
"* [`Pixel Classification Models`](https://developers.arcgis.com/python/api-reference/arcgis.learn.toc.html#pixel-classification-models)\n",
- " * Adds [`ConnectNet`](https://developers.arcgis.com/python/api-reference/arcgis.learn.toc.html?highlight=retinanet#connectnet) Model\n",
+ " * Adds [`ConnectNet`](https://developers.arcgis.com/python/api-reference/arcgis.learn.toc.html#connectnet) Model\n",
" * Adds inference and exports support to:\n",
" * [`ChangeDetector`](https://developers.arcgis.com/python/api-reference/arcgis.learn.toc.html#changedetector)\n",
" * Adds threshholding functionality to:\n",
" * [`HEDEdgeDectector`](https://developers.arcgis.com/python/api-reference/arcgis.learn.toc.html?highlight=retinanet#hededgedetector)\n",
" * [`MultiTaskRoadExtractor`](https://developers.arcgis.com/python/api-reference/arcgis.learn.toc.html?highlight=retinanet#multitaskroadextractor)\n",
" * Adds support for multispectral data\n",
+ " * Adds support for using multiple folders for training model\n",
"* [`Image Translations Models`](https://developers.arcgis.com/python/api-reference/arcgis.learn.toc.html#image-translation-models)\n",
" * Adds inference and export support to:\n",
" * [`Pix2Pix`](https://developers.arcgis.com/python/api-reference/arcgis.learn.toc.html#pix2pix)\n",
