diff --git a/Snakefile b/Snakefile
index ca3e4c49d..a44f49aed 100644
--- a/Snakefile
+++ b/Snakefile
@@ -18,6 +18,7 @@ conf_default_file = os.path.join(workflow.current_basedir, "config/config.defaul
 if not exists(conf_file) and exists(conf_default_file):
     copyfile(conf_default_file, conf_file)
 
+
 configfile: "config/config.default.yaml"
 configfile: "config/config.yaml"
 
diff --git a/doc/release_notes.rst b/doc/release_notes.rst
index 02c686f62..bc1cd2c67 100644
--- a/doc/release_notes.rst
+++ b/doc/release_notes.rst
@@ -9,7 +9,7 @@ Release Notes
 
 .. Upcoming Release
 .. ================
-.. 
+..
 
 PyPSA-Eur 0.10.0 (19th February 2024)
 =====================================
diff --git a/doc/tutorial_sector.rst b/doc/tutorial_sector.rst
index 3598cdfbd..a15561502 100644
--- a/doc/tutorial_sector.rst
+++ b/doc/tutorial_sector.rst
@@ -370,7 +370,7 @@ successfully.
             4 -> 60
             23 -> 61
             4 -> 61
-    }   
+    }
 
 |
 
@@ -809,7 +809,7 @@ workflow:
             4 -> 85
             71 -> 86
             4 -> 86
-    }  
+    }
 
 |