Update performance.md

Author: meyerbaptiste

core/performance.md

@@ -219,7 +219,7 @@ api_platform:
 
 The whole configuration seen before will no longer work and Doctrine will recover its default behavior.
 
-### Partial pagination
+### Partial Pagination
 
 When using the default pagination, the Doctrine paginator will execute a `COUNT` query on the collection. The result of the
 `COUNT` query is used to compute the latest page available. With big collections this can lead to quite long response times.
@@ -234,7 +234,7 @@ api_platform:
             partial: true # Disabled by default
 ```
 
-More details are available on the [pagination documentation](pagination.md).
+More details are available on the [pagination documentation](pagination.md#partial-pagination).
 
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