Avoid spurious markdown list creation

Co-authored-by: lzutao <[email protected]>

Author: Mark-Simulacrum

src/design_notes/autoref_ops.md

@@ -1,8 +1,8 @@
 # Autoref/Autoderef in operators
 
 Rust permits overriding most of the operators (e.g., `+`, `-`, `+=`). In part
-due to `Copy` types not auto-dereferencing, it is common to have `T + &T` or `&T
-+ &T`, with potentially many levels of indirection on either side of the
+due to `Copy` types not auto-dereferencing, it is common to have `T + &T`
+or `&T + &T`, with potentially many levels of indirection on either side of the
 operator.
 
 There is desire in general to avoid needing to both add impls for referenced