fix: improve placeholder assignment in CodeSnippets component (#1256)

- Update the placeholder assignment logic to use find method for better accuracy.
- Ensure the correct name is retrieved based on the key from authOptions.

Author: Revisto

packages/docusaurus-theme-openapi-docs/src/theme/ApiExplorer/CodeSnippets/index.tsx

@@ -76,7 +76,7 @@ function CodeSnippets({
               const authOptions =
                 clonedAuth?.options?.[key] ??
                 clonedAuth?.options?.[comboAuthId];
-              placeholder = authOptions?.[0]?.name;
+              placeholder = authOptions?.find((opt: any) => opt.key === key)?.name;
               obj[key] = cleanCredentials(obj[key]);
             } else {
               obj[key] = `<${placeholder ?? key}>`;