src/doc/en/installation/index.rst (Windows, no-dev): Copy conda insta…

…ll instructions here

src/doc/en/installation/index.rst

@@ -80,9 +80,23 @@ Windows
       Then go to the Microsoft Store and install Ubuntu (or another
       Linux distribution). Start Ubuntu from the start menu.
 
-      On the Linux running on WSL, you always have root access, so you
-      can use any of the installation methods described below for
-      Linux.
+      In an Ubuntu (WSL) terminal, type the following commands to install
+      Sage from conda-forge.
+
+      .. code-block:: shell
+
+         $ curl -L -O https://github.com/conda-forge/miniforge/releases/latest/download/Mambaforge-$(uname)-$(uname -m).sh
+         $ sh Mambaforge-$(uname)-$(uname -m).sh
+         $ mamba create -n sage sage python=3.11
+
+      (If there are any installation failures, please report them to
+      the conda-forge maintainers by opening a `GitHub Issue for
+      conda-forge/sage-feedstock <https://github.com/conda-forge/sage-feedstock/issues>`_.)
+
+      You can now start SageMath as follows:
+
+         $ conda activate sage
+         $ sage
 
 Linux
 =====