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

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

Author: pre-commit-ci[bot]

content/3_Silver/Prefix_Sums.mdx

@@ -277,11 +277,12 @@ In Python you can use [itertools.accumulate](https://docs.python.org/3.6/library
 ```py
 # import itertools
 
+
 def psum(a):
 	psum = [0]
 	for i in a:
 		psum.append(psum[-1] + i)  # psum[-1] is the last element in the list
-	return psum # Or with itertools.accumulate: [0] + list(itertools.accumulate(a))
+	return psum  # Or with itertools.accumulate: [0] + list(itertools.accumulate(a))
 
 
 N, Q = map(int, input().split())