docs: Fix broken build 🤡

https://mdxjs.com/docs/troubleshooting-mdx/#could-not-parse-importexports-with-acorn-error

Author: igorlukanin

docs/pages/reference/configuration/environment-variables.mdx

@@ -563,8 +563,8 @@ The timeout value for any queries made to the database by Cube.
 <InfoBox>
 
 There's a hard limit of 20 minutes for queries that ingest data into Cube Store
-when pre-aggregations are built. If you bump into this limit, consider using an
-export bucket and splitting pre-aggregations into partitions.
+when pre-aggregations are built. If you bump into this limit, consider using
+an export bucket and splitting pre-aggregations into partitions.
 
 </InfoBox>