Fix formatting

Author: randomPoison

src/lifetimes/borrow-one.md

@@ -70,10 +70,11 @@ fn main() {
 
 # More to Explore
 
-- The "help" message in the error notes that we can add a lifetime bound `'b:
-  'a` to say that `'b` will live at least as long as `'a`, which would then
-  allow us to return `query`. This is an example of lifetime "variance", which
-  allows us to return a longer lifetime where a shorter one is expected.
+- The "help" message in the error notes that we can add a lifetime bound
+  `'b:
+  'a` to say that `'b` will live at least as long as `'a`, which would
+  then allow us to return `query`. This is an example of lifetime "variance",
+  which allows us to return a longer lifetime where a shorter one is expected.
 
 - We can do something similar by returning a `'static` lifetime, e.g. a
   reference to a `static` variable. The `'static` lifetime is guaranteed to be