typing: fix a suppression directive that was mangled by black formatting
It looks like black is moving comments needed by pytype out of position, and
causing some things that should be disabled to be enforced anyway.
Differential Revision: https://phab.mercurial-scm.org/D10165
{
// Enforcing
"eqeqeq" : true, // true: Require triple equals (===) for comparison
"forin" : true, // true: Require filtering for..in loops with obj.hasOwnProperty()
"freeze" : true, // true: prohibits overwriting prototypes of native objects such as Array, Date etc.
"nonbsp" : true, // true: Prohibit "non-breaking whitespace" characters.
"undef" : true, // true: Require all non-global variables to be declared (prevents global leaks)
// Environments
"browser" : true // Web Browser (window, document, etc)
}