add doc-clean

Author: MatthewSZhang

.github/workflows/test.yml

@@ -37,6 +37,7 @@ jobs:
       - name: Test with doctest
         if: matrix.os == 'ubuntu-latest'
         run: |
+          pixi run -e docs doc-clean
           pixi run -e docs doc
           CMD=doctest pixi run -e docs doc
       - name: Test nogil

.readthedocs.yml

@@ -13,4 +13,5 @@ build:
          - pixi install -e docs
       build:
          html:
+            - pixi run -e docs doc-clean
             - BUILDDIR=$READTHEDOCS_OUTPUT/html pixi run -e docs doc