docs: fix minor typo (#13185)

Author: jangir-ritik

docs/performance/overview.mdx

@@ -58,7 +58,7 @@ To learn more, see the [Custom Components Performance](../admin/custom-component
 
 ### Block references
 
-Use [Block References](../fields/blocks#block-references) to share the same block across multiple fields without bloating the config. This will reduce the number of fields to traverse when processing permissions, etc. and can can significantly reduce the amount of data sent from the server to the client in the Admin Panel.
+Use [Block References](../fields/blocks#block-references) to share the same block across multiple fields without bloating the config. This will reduce the number of fields to traverse when processing permissions, etc. and can significantly reduce the amount of data sent from the server to the client in the Admin Panel.
 
 For example, if you have a block that is used in multiple fields, you can define it once and reference it in each field.