Update language support

Author: jennifer-shehane

docs/api/commands/prompt.mdx

@@ -176,6 +176,12 @@ cy.prompt([
 
 ## Writing effective prompts
 
+:::note
+
+**Language Support:** `cy.prompt` is optimized for English prompts and provides the most reliable results when prompts are written in English. We cannot guarantee accuracy or provide support for non-English prompts.
+
+:::
+
 Prompt clarity determines reliability. Follow these rules:
 
 - **Imperative voice**: Start with an action (click, type, verify).