Update subgraph-composition.mdx

Author: MichaelMacaulay

website/src/pages/en/subgraphs/guides/subgraph-composition.mdx

@@ -41,7 +41,7 @@ While the source Subgraph is a standard Subgraph, the dependent Subgraph uses th
 
 - All Subgraphs need to be published with a **specVersion 1.3.0 or later** (Use the latest graph-cli version to be able to deploy composable Subgraphs)
 - See notes here: https://github.com/graphprotocol/graph-node/releases/tag/v0.37.0
-- Immutable entities only: All Subgraphs must have [immutable entities](https://thegraph.com/docs/en/subgraphs/best-practices/immutable-entities-bytes-as-ids/#immutable-entities) when the Subgraph is deployed
+- Immutable entities only: All Subgraphs must have [immutable entities](/subgraphs/best-practices/immutable-entities-bytes-as-ids/#immutable-entities) when the Subgraph is deployed
 - Pruning can be used in the source Subgraphs, but only entities that are immutable can be composed on top of
 - Source Subgraphs cannot use grafting on top of existing entities
 - Aggregated entities can be used in composition, but entities that are composed from them cannot performed additional aggregations directly