[HELIX-862] s/maintainence/maintenance docs fix (#1968)
diff --git a/website/src/site/markdown/index.md b/website/src/site/markdown/index.md
index afea5cb..ad4732f 100644
--- a/website/src/site/markdown/index.md
+++ b/website/src/site/markdown/index.md
@@ -37,7 +37,7 @@
Each node performs one or more of the primary functions of the cluster, such as storing and serving data, producing and consuming data streams, and so on. __Once configured for your system, Helix acts as the global brain for the system__. It is designed to make decisions that cannot be made in isolation. Examples of such decisions that require global knowledge and coordination:
-* scheduling of maintainence tasks, such as backups, garbage collection, file consolidation, index rebuilds
+* scheduling of maintenance tasks, such as backups, garbage collection, file consolidation, index rebuilds
* repartitioning of data or resources across the cluster
* informing dependent systems of changes so they can react appropriately to cluster changes
* throttling system tasks and changes
