Fix ui-store broken link

Author: AndreiBelokopytov

docs/guide/core-themes/ui-store.md

@@ -1,6 +1,6 @@
 # Working with UI Store (Interface state)
 
-We are using Vuex to store the application interface state. The [ui-store file](https://github.com/DivanteLtd/vue-storefront/blob/master/core/store/modules/ui-store/index.ts) contains the information about the state of different pieces of UI like: Overlay visibility, Wishlist visibility etc. Of course, you are not forced to make use of it in your theme but keep in mind that many of core components are using UI store.
+We are using Vuex to store the application interface state. The [ui-store file](https://github.com/DivanteLtd/vue-storefront/blob/master/src/modules/ui-store/index.ts) contains the information about the state of different pieces of UI like: Overlay visibility, Wishlist visibility etc. Of course, you are not forced to make use of it in your theme but keep in mind that many of core components are using UI store.
 
 ## State object