Add back closing curly braces for puppet type snippets

This braces got lost when #70 was merged

UltiSnips/puppet.snippets

@@ -75,6 +75,7 @@ snippet file "File resource type" b
 file { '${1:name}':
 	source => "puppet://${2:path}",
 	mode   => ${3:mode},
+}
 endsnippet
 
 snippet File "Defaults for file" b
@@ -88,6 +89,7 @@ snippet group "Group resource type" b
 group { '${1:groupname}':
 	ensure => ${3:present},
 	gid    => ${2:gid},
+}
 endsnippet
 
 snippet mount "Mount resource type" b
@@ -114,6 +116,7 @@ user { '${1:username}':
 	home       => ${6:homedirectory},
 	managehome => false,
 	require    => Group['${7:group'}],
+}
 endsnippet
 
 snippet service "Service resource type" b