change link for varioqub flutter docs

commit_hash:fed6e6490a21a71b70e83e9eee461032999f53ef

Author: kerradus

README.md

@@ -6,7 +6,7 @@ The plugin is available for Android and iOS and includes native Varioqub SDKs:
 - Varioqub SDK for Android [0.7.0](https://yandex.ru/support2/varioqub-app/en/sdk/changelog).
 - Varioqub SDK for iOS [0.7.1](https://yandex.ru/support2/varioqub-app/en/sdk/changelog).
 
-You can found documentation [here](https://yandex.ru/support2/varioqub-app/en/sdk/).
+You can found documentation [here](https://yandex.ru/support/varioqub-app/en/).
 
 ## Getting Started
 In your flutter project add the following dependency: