Allow unhardened derivation steps for key origin

bip-wallet-policies.mediawiki

@@ -193,7 +193,7 @@ Each element of the key origin information vector is a <tt>KEY</tt> expression.
 * Optionally, key origin information, consisting of:
 ** An open bracket <tt>[</tt>
 ** Exactly 8 hex characters for the fingerprint of the master key from which this key is derived from (see [[bip-0032.mediawiki|BIP-32]] for details)
-** Followed by zero or more <tt>/NUM'</tt> path elements to indicate hardened derivation steps between the fingerprint and the xpub that follows
+** Followed by zero or more <tt>/NUM'</tt> or <tt>/NUM</tt> path elements to indicate hardened or unhardened derivation steps between the fingerprint and the xpub that follows
 ** A closing bracket <tt>]</tt>
 * Followed by the actual key, which is a serialized extended public key (as defined in [[bip-0032.mediawiki|BIP-32]]).