Fixed a small typo in the tutorial

Just something I noticed while reading the tutorial.

Author: madjar

doc/tutorial.md

@@ -2655,7 +2655,7 @@ fn main() {
 
 In general, `use` creates an local alias:
 An alternate path and a possibly different name to access the same item,
-whiteout touching the original, and with both being interchangeable.
+without touching the original, and with both being interchangeable.
 
 ## Reexporting names