docs: update link to cookie limits · expressjs/cookie-session@7dc0c5d

Original file line number	Diff line number	Diff line change
`@@ -261,7 +261,7 @@ recommends that a browser SHOULD allow`
`261`	`261`	`> the cookie's name, value, and attributes)`
`262`	`262`
`263`	`263`	`In practice this limit differs slightly across browsers. See a list of`
`264`		`-[browser limits here](http://browsercookielimits.squawky.net/). As a rule`
	`264`	`+[browser limits here](http://browsercookielimits.iain.guru). As a rule`
`265`	`265`	`of thumb don't exceed 4093 bytes per domain.`
`266`	`266`
`267`	`267`	`If your session object is large enough to exceed a browser limit when encoded,`