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

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

scripts/add_brownfield.py

@@ -3,7 +3,9 @@
 #
 # SPDX-License-Identifier: MIT
 
-"""Prepares brownfield data from previous planning horizon."""
+"""
+Prepares brownfield data from previous planning horizon.
+"""
 
 import logging
 

scripts/add_existing_baseyear.py

@@ -3,7 +3,10 @@
 #
 # SPDX-License-Identifier: MIT
 
-"""Adds existing power and heat generation capacities for initial planning horizon."""
+"""
+Adds existing power and heat generation capacities for initial planning
+horizon.
+"""
 
 import logging
 

scripts/build_retro_cost.py

@@ -5,9 +5,9 @@
 # SPDX-License-Identifier: MIT
 
 """
-This script calculates the space heating savings through better
+This script calculates the space heating savings through better insulation of
-insulation of the thermal envelope of a building and corresponding costs for
+the thermal envelope of a building and corresponding costs for different
-different building types in different countries.
+building types in different countries.
 
 Methodology
 -----------