Update docs/tutorials/random-numbers.md

Co-authored-by: Roy Frostig <[email protected]>

docs/tutorials/random-numbers.md

@@ -121,7 +121,7 @@ key = random.key(42)
 print(key)
 ```
 
-A key is an array with a special dtype corresponding to the particular PRNG impl being used; in the default impl each key is backed by a pair of `uint32` values.
+A key is an array with a special dtype corresponding to the particular PRNG implementation being used; in the default implementation each key is backed by a pair of `uint32` values.
 
 The key is effectively a stand-in for NumPy's hidden state object, but we pass it explicitly to {func}`jax.random` functions.
 Importantly, random functions consume the key, but do not modify it: feeding the same key object to a random function will always result in the same sample being generated.