List maintainers on separate lines and drop 3.1.1

library/r-base

@@ -1,6 +1,6 @@
-# maintainer: "Carl Boettiger & Dirk Eddelbuettel" [email protected] (@cboettig, @eddelbuettel)
+# maintainer: "Carl Boettiger" <[email protected]> (@cboettig)
+# maintainer: "Dirk Eddelbuettel" <[email protected]> (@eddelbuettel)
 
 latest: git://github.com/rocker-org/rocker@105fca2b42051c5cd0894da31839c99a9b7de320 debian/r-base
 3.1.2: git://github.com/rocker-org/rocker@105fca2b42051c5cd0894da31839c99a9b7de320 debian/r-base
-3.1.1: git://github.com/rocker-org/rocker@2d09bbed2a9d180ecb96282fc8458c747039be3 debian/r-base