New translations live.md (Portuguese)

Author: benface

website/src/pages/pt/subgraphs/querying/graph-client/live.md

@@ -12,7 +12,7 @@ plugins:
       defaultInterval: 1000
 ```
 
-## Usage
+## Uso
 
 Set the default update interval you wish to use, and then you can apply the following GraphQL `@directive` over your GraphQL queries: