SetupConda.md

@@ -81,7 +81,7 @@ Enjoy!
 Updating an environment is almost the same
 
 ```
-mamba env create --file https://apt.ligo-wa.caltech.edu/sources/conda/environments/linux-64/cds-py37.yaml --prune
+mamba env update --file https://apt.ligo-wa.caltech.edu/sources/conda/environments/linux-64/cds-py37.yaml --prune
 ```
 
 ```--prune``` removes packages not needed after the update.
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