[DOCS] Fix typo (#69838)

Author: Mike Barretta

docs/reference/modules/node.asciidoc

@@ -74,7 +74,7 @@ node fails to start.
 <<transform-node,{transform-cap} node>>::
 
 A node that has the `transform` role. If you want to use {transforms}, there
-be at least one {transform} node in your cluster. For more information, see
+must be at least one {transform} node in your cluster. For more information, see
 <<transform-settings>> and <<transforms>>.
 
 [NOTE]