Fix typo in create-index.asciidoc (#41806)

docs/reference/indices/create-index.asciidoc

@@ -12,7 +12,7 @@ PUT twitter
 --------------------------------------------------
 // CONSOLE
 
-This create an index named `twitter` with all default setting.
+This creates an index named `twitter` with all default setting.
 
 [NOTE]
 .Index name limitations