Fix typo in atomics.md

src/atomics.md

@@ -4,7 +4,7 @@ Rust pretty blatantly just inherits the memory model for atomics from C++20. Thi
 due to this model being particularly excellent or easy to understand. Indeed,
 this model is quite complex and known to have [several flaws][C11-busted].
 Rather, it is a pragmatic concession to the fact that *everyone* is pretty bad
-at modeling atomics. At very least, we can benefit from existing tooling and
+at modeling atomics. At the very least, we can benefit from existing tooling and
 research around the C/C++ memory model.
 (You'll often see this model referred to as "C/C++11" or just "C11". C just copies
 the C++ memory model; and C++11 was the first version of the model but it has