fix typo
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@ -650,7 +650,7 @@ block observables-section-intro
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+ifDocsFor('ts')
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:marked
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A more important difference: we no longer call `toPromise`.
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Instead we return the *observable* from the the `htttp.get`,
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Instead we return the *observable* from the the `http.get`,
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after chaining it to another RxJS operator, <code>map</code>,
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to extract heroes from the response data.
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