Update workflows.rst

Add missing workflows to module guide

docs/source/module_guide/workflows.rst

@@ -55,6 +55,13 @@ KKRhost Jij calculation
    :private-members:
    :special-members:
 
+KKRhost semi-finite (decimation) calculation
+--------------------------------------------
+.. automodule:: aiida_kkr.workflows._decimation
+   :members:
+   :private-members:
+   :special-members:
+
 
 KKRimp self-consistency
 -----------------------
@@ -69,4 +76,25 @@ KKRimp complete calculation
    :members:
    :private-members:
    :special-members:
+
+KKRimp combine impurities to larger imp. cluster
+------------------------------------------------
+.. automodule:: aiida_kkr.workflows._combine_imps
+   :members:
+   :private-members:
+   :special-members:
+
+STM scan around impurities
+--------------------------
+.. automodule:: aiida_kkr.workflows.kkr_STM
+   :members:
+   :private-members:
+   :special-members:
+
+Impurity embedding + calculation of YSR states in superconductors
+-----------------------------------------------------------------
+.. automodule:: aiida_kkr.workflows.imp_BdG
+   :members:
+   :private-members:
+   :special-members: