Update getting-started.asciidoc (#28145)

Replaced single quotation marks with double quotation marks surrounding localhost address

Author: BoudewijnKlijn

docs/reference/getting-started.asciidoc

@@ -670,8 +670,8 @@ You can download the sample dataset (accounts.json) from https://github.com/elas
 
 [source,sh]
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-curl -H "Content-Type: application/json" -XPOST 'localhost:9200/bank/account/_bulk?pretty&refresh' --data-binary "@accounts.json"
-curl 'localhost:9200/_cat/indices?v'
+curl -H "Content-Type: application/json" -XPOST "localhost:9200/bank/account/_bulk?pretty&refresh" --data-binary "@accounts.json"
+curl "localhost:9200/_cat/indices?v"
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 // NOTCONSOLE