CH05: fix script nesting (from Murchandamus feedback, thanks!)

chapters/authorization-authentication.adoc

@@ -499,14 +499,13 @@ powerful feature. ((("accounts receivable (AR)")))Mohammed's company
 uses a multisignature script for all customer payments, known in
 accounting terms as "accounts receivable," or AR. With the
 multisignature scheme, any payments made by customers are locked in such
-a way that they require at least two signatures to release, from
-Mohammed and one of his partners or from his attorney who has a backup
-key. A multisignature scheme like that offers corporate governance
+a way that they require at least two signatures to release.  Mohammed,
+his three partners, and their attorney can each provide one signature.
+A multisignature scheme like that offers corporate governance
 controls and protects against theft, embezzlement, or loss.
 
 The resulting script is quite long and looks like this:
 
-//FIXME:script match text with nesting
 ----
 2 <Mohammed's Public Key> <Partner1 Public Key> <Partner2 Public Key> <Partner3 Public Key> <Attorney Public Key> 5 OP_CHECKMULTISIG
 ----