News68: Coldcard casing fixup

Author: bitschmidty

_posts/en/newsletters/2019-10-16-newsletter.md

@@ -188,7 +188,7 @@ notable changes to popular Bitcoin infrastructure projects.
   descriptor][] that sorts the pubkeys provided to it using the
   lexicographic order described in [BIP67][].  This makes it possible to
   import xpub-based descriptors for wallets that require using BIP67,
-  such as the ColdCard hardware wallet in multisig mode.
+  such as the Coldcard hardware wallet in multisig mode.
 
 - [LND #3561][] adds a new channel validation package that unifies the
   logic used to verify channels both when channel-open data is received