rabbitmq: fix RuboCop Style/TrailingBodyOnMethodDefinition.

Formula/rabbitmq.rb

@@ -53,12 +53,14 @@ class Rabbitmq < Formula
     (bash_completion/"rabbitmqadmin.bash").write Utils.popen_read("#{sbin}/rabbitmqadmin --bash-completion")
   end
 
-  def caveats; <<~EOS
+  def caveats
+    <<~EOS
       Management Plugin enabled by default at http://localhost:15672
     EOS
   end
 
-  def rabbitmq_env; <<~EOS
+  def rabbitmq_env
+    <<~EOS
       CONFIG_FILE=#{etc}/rabbitmq/rabbitmq
       NODE_IP_ADDRESS=127.0.0.1
       NODENAME=rabbit@localhost
@@ -68,7 +70,8 @@ class Rabbitmq < Formula
 
   plist_options :manual => "rabbitmq-server"
 
-  def plist; <<~EOS
+  def plist
+    <<~EOS
       <?xml version="1.0" encoding="UTF-8"?>
       <!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN"
       "http://www.apple.com/DTDs/PropertyList-1.0.dtd">