[DOCS] Fix typo in create data stream API docs

docs/reference/indices/create-data-stream.asciidoc

@@ -6,8 +6,8 @@
 
 Creates a new data stream.
 
-A data stream can only be created if the namespace it targets has a component
-template that exists with a `data_stream` definition.
+A data stream can only be created if the namespace it targets has a composable
+index template that exists with a `data_stream` definition.
 
 [source,console]
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