Update bip-0032.mediawiki

Co-authored-by: Jon Atack <[email protected]>

Author: ddustin

bip-0032.mediawiki

@@ -65,7 +65,7 @@ In what follows, we will define a function that derives a number of child keys f
 
 We represent an extended private key as (k, c), with k the normal private key, and c the chain code. An extended public key is represented as (K, c), with K = point(k) and c the chain code.
 
-When deriving child keys, a 'hardened' child key can only be generated using a private key. This provides security advantages but reduces the usefulness of HD key derivation. It is typically used to seperate 'accounts' from each other.
+When deriving child keys, a 'hardened' child key can only be generated using a private key. This provides security advantages but reduces the usefulness of HD key derivation. It is typically used to separate 'accounts' from each other.
 
 Each extended key has 2<sup>31</sup> normal child keys, and 2<sup>31</sup> hardened child keys. Each of these child keys has an index. The normal child keys use indices 0 through 2<sup>31</sup>-1. The hardened child keys use indices 2<sup>31</sup> through 2<sup>32</sup>-1. To ease notation for hardened key indices, a number i<sub>H</sub> represents i+2<sup>31</sup>.