Update website/pages/en/quick-start.mdx

Co-authored-by: Benoît Rouleau <[email protected]>

Author: idalithb

website/pages/en/quick-start.mdx

@@ -87,7 +87,7 @@ The `init` command in the previous step creates a scaffold subgraph that you can
 
 When making changes to the subgraph, you will mainly work with three files:
 
-- Manifest (`subgraph.yaml`) - defines what data sources your subgraphs will index.
+- Manifest (`subgraph.yaml`) - defines what data sources your subgraph will index.
 - Schema (`schema. graphql`) - defines what data you wish to retrieve from the subgraph.
 - AssemblyScript Mappings (`mapping.ts`) - translates data from your data sources to the entities defined in the schema.