WIP fixing tabs spaces problem

docs/html/user_guide.rst

@@ -1119,9 +1119,9 @@ How to test
       and let us know if it works for you with ``pip install``. Try:
         - installing several packages simultaneously
         - re-creating an environment using a ``requirements.txt`` file
-	- using ``pip install --force-reinstall`` to check whether
-	  it does what you think it should
-	- using constraints files
+        - using ``pip install --force-reinstall`` to check whether
+          it does what you think it should
+        - using constraints files
    -  If you have a build pipeline that depends on pip installing your
       dependencies for you, check that the new resolver does what you
       need.