Update Errata.md

Author: BenjaminMichaelis

Errata.md

@@ -42,4 +42,4 @@ Zhou Jing | 4 | 161 | Fix `input < 9` to `input < 0` in Listing 4.24
 Zhou Jing    | 4 | 119 | Show inconsistent size multi-dimensional array in listing 3.16
 Zhou Jing | 3  | 114 | Replace `second` with `third` in "// Retrieve third item from the end (Python)"
 Tyler Woody | 13 | 702 | Remove the `!` negation in `string.IsNullOrWhiteSpace(input)` in the while loop to properly allow looping
-Benjamin Michaelis | 19 | .. | Add a `(` before the `next + 1` to complete the parenthesis.
+Benjamin Michaelis | 19 | 948-949 | Add a `(` before the `next + 1` to complete the parenthesis.