Update GetDocuments API request specification in CodePair to match recent changes in Admin Server

[kokodak]

Description:

Recently, the request specification for the GetDocuments API in Admin Server has changed through this PR.

As a result, the parts of CodePair that utilize the GetDocuments API need to be updated to align with the new API request specification.

codepair/backend/src/workspace-documents/workspace-documents.service.ts

Lines 165 to 176 in e1cebe0

	async findManyFromYorkie(
	documentKeyList: Array<string>
	): Promise<FindDocumentsFromYorkieResponse | undefined> {
	return new Promise((resolve, reject) => {
	const client = connect(`${this.configService.get<string>("YORKIE_API_ADDR")}`);
	client.on("error", (err) => reject(err));
	const requestBody = JSON.stringify({
	project_name: this.configService.get<string>("YORKIE_PROJECT_NAME"),
	document_keys: documentKeyList,
	});

Why:

To ensure seamless integration between CodePair and Admin Server after the recent change in the API request specification. This enhancement is crucial to maintain the functionality of CodePair.

[devleejb]

@kokodak
If you want to resolve this issue, please tell me.
I will assign you.

[kokodak]

@kokodak If you want to resolve this issue, please tell me. I will assign you.

I want to resolve it. Could I try it?