[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

scripts/solve_network.py

@@ -329,7 +329,8 @@ def add_retrofit_gas_boiler_constraint(n, snapshots):
 
 
 def check_transmission_limit(n):
-    """Check if transmission expansion limit is already reached; then turn off.
+    """
+    Check if transmission expansion limit is already reached; then turn off.
 
     In particular, this function checks if the total transmission
     capital cost or volume implied by s_nom_min and p_nom_min are