Use build task instead of build:packages

🤷

Author: mfisher87

.readthedocs.yaml

@@ -36,7 +36,7 @@ build:
     # then install the wheels into the docs environment.
     pre_build:
       - /bin/bash --login -c "micromamba run -n jupytergis-build jlpm install"
-      - /bin/bash --login -c "micromamba run -n jupytergis-build jlpm build:packages"
+      - /bin/bash --login -c "micromamba run -n jupytergis-build jlpm build"
       - |-
         /bin/bash --login -c "micromamba run -n jupytergis-docs \
           python -m pip install \