partial_sums fix, wrong name

subjects/partial_sums/README.md

@@ -2,7 +2,7 @@
 
 ### Instructions
 
-Write a `partial_sums` function that receives a reference of an array of u64 and returns a vector with the partial sums of the received array.
+Write a `parts_sums` function that receives a reference of an array of u64 and returns a vector with the partial sums of the received array.
 
 This is how partial sums work:
 
@@ -34,13 +34,13 @@ This is how partial sums work:
 3- So, in conclusion:
 
 ```rs
-partial_sums(&[1, 2, 3, 4, 5]) // == [15, 10, 6, 3 ,1, 0]
+parts_sums(&[1, 2, 3, 4, 5]) // == [15, 10, 6, 3 ,1, 0]
 ```
 
 ### Expected Result
 
 ```rs
-pub fn matrix_determinant(arr: &[u64]) -> Vec<64>{
+pub fn parts_sums(arr: &[u64]) -> Vec<64>{
 
 }
 ```