Add link to AE/DB assay dev episode

Author: bethac07

04-run-cellprofiler.md

@@ -101,5 +101,5 @@ In general, as long as you are running inside a tmux session and it isn't killed
 The optional QC and assay development steps have post-CellProfiler components. These pipelines need only be run if the user plans to do these post-CellProfiler steps.
 
 - QC may require visual inspection of images, [creation of a machine learning classifier to detect poor quality images](https://github.com/CellProfiler/tutorials/tree/master/QualityControl), and/or running scripts to evaluate CV. How best to evaluate quality is left to the user.
-- The assay development step creates images to be visually evaluated, either individually or [after stitching for easier evaluation](https://currentprotocols.onlinelibrary.wiley.com/doi/full/10.1002/cpz1.89). If your segmentation is not ideal, you may need to update your assay dev and analysis pipelines by manually tuning the segmentation steps on a local set of representative data until they perform better on your images, then making sure to update the segmentation in the assay dev and analysis pipelines on your cluster accordingly.
+- The assay development step creates images to be visually evaluated, either individually or [after stitching for easier evaluation](https://currentprotocols.onlinelibrary.wiley.com/doi/full/10.1002/cpz1.89). If your segmentation is not ideal, you may need to update your assay dev and analysis pipelines by manually tuning the segmentation steps on a local set of representative data until they perform better on your images, then making sure to update the segmentation in the assay dev and analysis pipelines on your cluster accordingly. A video walkthrough of this step is [now available](https://youtu.be/5pAcdd_Nn00)
 - After running the final analysis pipelines, proceed to the next step of this guide.