Merge pull request #2629 from memoryleak47/typo

typo

Author: Manishearth

tests/ui/collapsible_if.rs

@@ -41,7 +41,7 @@ fn main() {
         }
     }
 
-    // Collaspe `else { if .. }` to `else if ..`
+    // Collapse `else { if .. }` to `else if ..`
     if x == "hello" {
         print!("Hello ");
     } else {