icon fix

views/transaction.pug

@@ -94,13 +94,13 @@ block content
 									span  or later - (
 									a(href="https://bitcoin.org/en/developer-guide#locktime-and-sequence-number", title="Locktime documentation")
 										span docs 
-										i(class="fa fa-external-link")
+										i(class="fas fa-external-link-alt")
 									span )
 								else
 									span Spendable after #{moment.utc(new Date(result.getrawtransaction.locktime * 1000)).format("Y-MM-DD HH:mm:ss")} (utc) - (
 									a(href="https://bitcoin.org/en/developer-guide#locktime-and-sequence-number", title="Locktime documentation")
 										span docs 
-										i(class="fa fa-external-link")
+										i(class="fas fa-external-link-alt")
 									span )
 
 					tr