Merge pull request #148 from ilmanzo/patch-1

typo

src/basic-types/char-bool-unit.md

@@ -75,12 +75,12 @@ fn main() {
 }
 
 fn implicitly_ret_unit() {
-    println!("I will returen a ()")
+    println!("I will return a ()")
 }
 
 // don't use this one
 fn explicitly_ret_unit() -> () {
-    println!("I will returen a ()")
+    println!("I will return a ()")
 }
 ```
 
@@ -97,4 +97,4 @@ fn main() {
 }
 ```
 
-> You can find the solutions [here](https://github.com/sunface/rust-by-practice)(under the solutions path), but only use it when you need it
+> You can find the solutions [here](https://github.com/sunface/rust-by-practice)(under the solutions path), but only use it when you need it