fixed copypaste typo

Author: l-trotta

docs/getting-started.asciidoc

@@ -158,7 +158,7 @@ include-tagged::{doc-tests-src}/usage/IndexingTest.java[single-doc-delete]
 
 ["source","java"]
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-include-tagged::{doc-tests-src}/usage/IndexingTest.java[create-products-index]
+include-tagged::{doc-tests-src}/usage/IndexingTest.java[delete-products-index]
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