update homepage

Contentstack.podspec

@@ -9,7 +9,7 @@ Contentstack is a headless CMS with an API-first approach that puts content at t
 In a world where content is consumed via countless channels and form factors across mobile, web and IoT, Contentstack reimagines content management by decoupling code from content. Business users manage content – no training or development required. Developers can create cross-platform apps and take advantage of a headless CMS that delivers content through APIs. With an architecture that’s extensible – but without the bloat of legacy CMS – Built.io Contentstack cuts down on infrastructure, maintenance, cost and complexity.
 DESC
 
-s.homepage         = 'https://www.built.io/products/contentstack/overview'
+s.homepage         = 'https://www.contentstack.com'
 s.license          = { :type => 'Commercial',:text => 'See https://www.built.io/'}
 s.author           = { 'Built.io' => '[email protected]' }
 s.source           = { :git => 'https://github.com/raweng/BuiltIOContentstack-iOS.git', :tag => s.version.to_s }