fix punctuation in list (again)

diff --git a/src/doc/trpl/mutability.md b/src/doc/trpl/mutability.md
index ef569a09e21375904194d7a6bdc9e6aa61cda2e0..9a9e38f7d0a587f87963c256704e666f3a372bf6 100644 (file)
--- a/src/doc/trpl/mutability.md
+++ b/src/doc/trpl/mutability.md
@@ -85,8 +85,8 @@ philosophy, memory safety, and the mechanism by which Rust guarantees it, the
 > You may have one or the other of these two kinds of borrows, but not both at
 > the same time:
 > 
-> * one or more references (`&T`) to a resource.
-> * exactly one mutable reference (`&mut T`)
+> * one or more references (`&T`) to a resource,
+> * exactly one mutable reference (`&mut T`).
 
 [ownership]: ownership.html
 [borrowing]: references-and-borrowing.html#borrowing