Fix highlighting bug in the 'for in' snippet

The closing bracket of the $3 tabstop wasn't highlighted properly.

Author: drew-y

snippets/language-javascript.cson

@@ -28,7 +28,7 @@
     'body' : 'for (var ${2:i} = 0; ${2:i} < ${1:array}.length; ${2:i}++) {\n\t${1:array}[${2:i}]$3\n}'
   'for in':
     'prefix': 'forin'
-    'body': 'for (var ${1:variable} in ${2:object}) {\n\t${3:if (${2:object}.hasOwnProperty(${1:variable})) {\n\t\t$4\n\t}}\n}'
+    'body': 'for (var ${1:variable} in ${2:object}) {\n\t${3:if (${2:object}.hasOwnProperty(${1:variable})) {\n\t\t$4\n\t\\}}\n}'
   'for of':
     'prefix': 'forof'
     'body': 'for (${1:variable} of ${2:iterable}) {\n\t$3\n}'