Update E1011.md

[BRT958]

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[peter-jerry-ye-code-review]

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Let me analyze this pull request and provide a code review.

Summary of Changes:
The pull request modifies the content of an error code documentation file (E1011.md). Specifically, it changes the English sentence "Or, you can use is syntax to use this pattern matching as a condition:" to its Chinese translation "或者, 你可以使用 is 语法使用这种模式匹配作为条件：".

Here's my review:

⚠️ [Mixed Language Documentation]

• Category: Maintainability
• Code Snippet: Line 26 in E1011.md
• Recommendation: Either keep the entire document in English or translate it completely to Chinese for consistency.
• Reasoning: Having mixed languages within the same documentation file can reduce readability and maintainability. It's better to choose one language and stick with it throughout the documentation. If translation is needed, it should be done consistently across the entire file.

The change itself is technically correct in terms of the translation, but it introduces a language inconsistency in the documentation file. I suggest discussing with the team whether they want to maintain the documentation in English, Chinese, or have separate versions for each language.