POM: use HTTPS where feasible

Author: ctrueden

pom.xml

@@ -31,7 +31,7 @@
 		<developer>
 			<id>ctrueden</id>
 			<name>Curtis Rueden</name>
-			<url>http://imagej.net/User:Rueden</url>
+			<url>https://imagej.net/User:Rueden</url>
 			<roles>
 				<role>founder</role>
 				<role>lead</role>