Update website/src/pages/en/about.mdx

Co-authored-by: Benoît Rouleau <benoit.rouleau@icloud.com>

Author: idalithb

website/src/pages/en/about.mdx

@@ -31,7 +31,7 @@ Each Subgraph defines:
 
 1. Define a [Subgraph Manifest](/en/subgraphs/developing/creating/subgraph-manifest/) with data sources and mappings.
 2. Use [Graph CLI](https://github.com/graphprotocol/graph-tooling/tree/main/packages/cli) to deploy the manifest to IPFS.
-3. An [Indexer](/en/indexing/overview/) picks it up and starts indexing Ethereum blocks.
+3. An [Indexer](/indexing/overview/) picks it up and starts indexing Ethereum blocks.
 4. Data becomes queryable via a [GraphQL endpoint](/en/subgraphs/querying/graphql-api/).
 
 ### Data Flow Overview