Add the information of PySCF in the installation guide

Author: FanwangM

website/installation.rst

@@ -3,6 +3,11 @@
 Installation
 ############
 
+.. note::
+   Because the dependency `PySCF <https://pyscf.org/user/install.html>`
+   does not support Windows, `AtomDB` is not supported on Windows. But we can use
+   `AtomDB` with `Windows Subsystem for Linux (WSL) <https://learn.microsoft.com/en-us/windows/wsl/>`_.
+
 Downloading Code
 ================
 
@@ -136,4 +141,4 @@ formats, run,
 
 .. code-block:: bash
 
-    make
+    make