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

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

Author: pre-commit-ci[bot]

backtracking/match_word_pattern.py

@@ -39,8 +39,9 @@ def backtrack(pattern_index, str_index):
             del pattern_map[char]
             del str_map[substr]
         return False
-    pattern_map: dict[str,str] = {}
-    str_map: dict[str,str] = {}
+
+    pattern_map: dict[str, str] = {}
+    str_map: dict[str, str] = {}
     return backtrack(0, 0)