Corrected typo

src/ch10-03-lifetime-syntax.md

@@ -281,7 +281,7 @@ In practice, it means that the lifetime of the reference returned by the
 `longest` function is the same as the smaller of the lifetimes of the
 references passed in. These constraints are what we want Rust to enforce.
 Remember, when we specify the lifetime parameters in this function signature,
-we’re not changingthe lifetimes of any values passed in or returned. Rather,
+we’re not changing the lifetimes of any values passed in or returned. Rather,
 we’re specifying that the borrow checker should reject any values that don’t
 adhere to these constraints. Note that the `longest` function doesn’t need to
 know exactly how long `x` and `y` will live, only that some scope can be