fixed two mistakes in: "We can ship a several built-in strategies, along with a simple interfaces to allow developers to write their own."

Author: nathan-websculpt

website/src/pages/en/subgraphs/querying/graph-client/architecture.md

@@ -85,7 +85,7 @@ graph LR;
     end
 ```
 
-> We can ship a several built-in strategies, along with a simple interfaces to allow developers to write their own.
+> We can ship several built-in strategies, along with a simple interface to allow developers to write their own.
 
 To take the concept of strategies to the extreme, we can even build a magical layer that does subscription-as-query, with any hook, and provide a smooth DX for dapps: