fix: incorrect text_type type declaration in Alibaba Tongyi Embeddings

[xyspg]

corrects the type declaration for the text_type parameter in Alibaba Tongyi embeddings. The previous declaration incorrectly listed text as an option, which is not supported. The corrected declaration includes the intended options: query and document as shown in official docs and comment above it.

Translation for the original comment:

/**
 * Value: query or document, default value is document
 * Description: After text is converted into vectors, it can be applied to downstream tasks such as retrieval, clustering, and classification.
 * For asymmetric tasks like retrieval, to achieve better retrieval effects, it is recommended to distinguish between query text (query) and
 * document text (document). For symmetric tasks like clustering and classification, there is no need to specify,
 * and the system's default value "document" can be used.
 */

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Name	Status	Preview	Comments	Updated (UTC)
langchainjs-api-refs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Apr 19, 2024 3:18am
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[bracesproul]

good catch, thanks for fixing!