Update conf.py

Author: mcbarton

docs/source/conf.py

@@ -9,8 +9,7 @@
 if on_rtd:
     XEUS_CPP_ROOT = os.path.abspath('../..')
     command_emscripten = 'cd ..;\
-                          mkdir -p "$HOME/micromamba";\
-                          curl -Ls https://micro.mamba.pm/api/micromamba/linux-64/latest | tar -xvj -C "$HOME/micromamba" bin/micromamba;\
+                          mamba init;\
                           mamba create -f environment-wasm-build.yml -y;\
                           mamba activate xeus-cpp-wasm-build;\
                           mamba create -f environment-wasm-host.yml --platform=emscripten-wasm32;\