Fix Malformed Author line

Author: PoWx Team

bip-0052.mediawiki

@@ -1,9 +1,9 @@
 <pre>
   BIP: 52
   Title: Durable, Low Energy Bitcoin PoW
-  Author: Michael Dubrovsky <mike+bip[at]powx.org>
-          Bogdan Penkovsky <bogdan+bip[at]powx.org>
-  Discussions-To: <mike+bip[at]powx.org>
+  Author: Michael Dubrovsky <mike+bip@powx.org>
+          Bogdan Penkovsky <bogdan+bip@powx.org>
+  Discussions-To: <mike+bip@powx.org>
   Comments-Summary: No comments yet.
   Comments-URI: https://github.com/PoWx-Org/obtc/wiki/BIP
   Status: Draft