id's must be unique, same as previous commit..

content/2018/07/making-freebsd-magnet-links.html

@@ -163,5 +163,5 @@ adjust as necessary.
 <s>Sorry about the code formatting.  I don't know how to make it look better
 in blogger.</s><label for="sn-blogger" class="margin-toggle
 sidenote-number"></label><input type="checkbox" id="sn-blogger"
-class="margin-toggle"/><span class="sidenote" id="sn-blogger">This blog
+class="margin-toggle"/><span class="sidenote">This blog
 no longer uses blogger.</span>