Fix typo

solutions/basic-types/functions.md

@@ -52,7 +52,7 @@ fn never_return() -> ! {
     // implement this function, don't modify fn signatures
     loop {
         println!("I return nothing");
-        // sleeping for 1 second to avoid exhausting the cpu resoucre
+        // sleeping for 1 second to avoid exhausting the cpu resource
         thread::sleep(time::Duration::from_secs(1))
     }
 }

zh-CN/src/basic-types/functions.md

@@ -86,7 +86,7 @@ fn main() {
         }
     };
 
-    println!("Excercise Failed if printing out this line!");
+    println!("Exercise Failed if printing out this line!");
 }
 ```