Update README.md

README.md

@@ -130,7 +130,7 @@ While the purpose of this pipeline is to perform image preprocessing and segment
 segmentation often change.  Depending on the experimental context, the provided cell nucleus segmentation may not 
 be adequate and if a different segmentation methodology is required then any custom logic can be added to the 
 pipeline as in the [mc38-spheroid](pub/analysis/mc38-spheroid) example.  Specifically, a [custom segmentation
-implemntation](pub/analysis/mc38-spheroid/spheroid_cytometer.py) is used here to identify spheroids rather 
+implementation](pub/analysis/mc38-spheroid/spheroid_cytometer.py) is used here to identify spheroids rather 
 than cells.
 
 ### Messaging Caveats