diff --git a/doc/configtables/solving.csv b/doc/configtables/solving.csv
index 0d3855dc..7ae3e4ea 100644
--- a/doc/configtables/solving.csv
+++ b/doc/configtables/solving.csv
@@ -13,4 +13,4 @@ solver,,,
 -- name,--,"One of {'gurobi', 'cplex', 'cbc', 'glpk', 'ipopt'}; potentially more possible","Solver to use for optimisation problems in the workflow; e.g. clustering and linear optimal power flow."
 -- options,--,"Key listed under ``solver_options``.","Link to specific parameter settings."
 solver_options,,"dict","Dictionaries with solver-specific parameter settings."
-mem,MB,"int","Estimated maximum memory requirement for solving networks."
\ No newline at end of file
+mem,MB,"int","Estimated maximum memory requirement for solving networks."
diff --git a/doc/costs.rst b/doc/costs.rst
index ff93b860..46b93482 100644
--- a/doc/costs.rst
+++ b/doc/costs.rst
@@ -55,4 +55,3 @@ set in the ``config.yaml`` (cf. Section  :ref:`costs_cf`  in
 .. literalinclude:: ../Snakefile
    :start-at: COSTS
    :end-at: COSTS
-
diff --git a/doc/index.rst b/doc/index.rst
index 5eab5feb..a0c7ed3f 100644
--- a/doc/index.rst
+++ b/doc/index.rst
@@ -187,6 +187,7 @@ The included ``.nc`` files are PyPSA network files which can be imported with Py
 .. code:: python
 
     import pypsa
+
     filename = "elec_s_1024_ec.nc"  # example
     n = pypsa.Network(filename)
 
@@ -242,4 +243,4 @@ The included ``.nc`` files are PyPSA network files which can be imported with Py
    release_notes
    licenses
    limitations
-   contributing
\ No newline at end of file
+   contributing
diff --git a/doc/limitations.rst b/doc/limitations.rst
index edeab4ed..a67fad0c 100644
--- a/doc/limitations.rst
+++ b/doc/limitations.rst
@@ -78,4 +78,3 @@ improving the approximations.
 
 - **Demand sufficiency:** Further measures of demand reduction may be
   possible beyond the assumptions made here.
-
diff --git a/doc/release_notes.rst b/doc/release_notes.rst
index 564b0951..9457496d 100644
--- a/doc/release_notes.rst
+++ b/doc/release_notes.rst
@@ -16,7 +16,7 @@ Upcoming Release
 PyPSA-Eur 0.8.0 (TBA)
 =====================
 
-.. note:: 
+.. note::
   This is the first release of PyPSA-Eur which incorporates its sector-coupled extension PyPSA-Eur-Sec.
 
 * The solver configurations in ``config.default.yaml`` are now modularized. To
diff --git a/doc/retrieve.rst b/doc/retrieve.rst
index afec9c2f..c06b330f 100644
--- a/doc/retrieve.rst
+++ b/doc/retrieve.rst
@@ -141,5 +141,3 @@ Rule ``retrieve_sector_databundle``
 In addition to the databundle required for electricity-only studies,
 another databundle is required for modelling sector-coupled systems.
 The size of this data bundle is around 640 MB.
-
-
diff --git a/doc/tutorial_sector.rst b/doc/tutorial_sector.rst
index 217469f7..66aae4b0 100644
--- a/doc/tutorial_sector.rst
+++ b/doc/tutorial_sector.rst
@@ -274,7 +274,7 @@ successfully.
         29 -> 47
         8 -> 49
         3 -> 49
-    } 
+    }
 
 |
 
@@ -284,7 +284,7 @@ Myopic Foresight Scenarios
 Configuration
 -------------
 
-In the myopic foresight mode, 
+In the myopic foresight mode,
 
 .. literalinclude:: ../test/config.myopic.yaml
    :language: yaml
@@ -497,7 +497,7 @@ implemented in the workflow:
         43 -> 46
         3 -> 47
         8 -> 47
-    }  
+    }
 
 |
 
@@ -521,4 +521,4 @@ configuration file.
     commit to a run:
 
     .. code:: bash
-        snakemake -call all -n
\ No newline at end of file
+        snakemake -call all -n
diff --git a/doc/wildcards.rst b/doc/wildcards.rst
index f6e47713..30c58929 100644
--- a/doc/wildcards.rst
+++ b/doc/wildcards.rst
@@ -107,7 +107,7 @@ currently:
 
 .. csv-table::
    :header-rows: 1
-   :widths: 10,20,10,10 
+   :widths: 10,20,10,10
    :file: configtables/opts.csv
 
 .. _sector_opts:
@@ -122,7 +122,7 @@ The ``{sector_opts}`` wildcard is only used for sector-coupling studies.
 
 .. csv-table::
    :header-rows: 1
-   :widths: 10,20,10,10 
+   :widths: 10,20,10,10
    :file: configtables/sector-opts.csv
 
 .. _scope: