Fix typos in "我们并不需要 Deno" document

[slow-computer[bot]]

resolve #6

Requirements

• Replace "featue" with "feature" in the sentence "但除此之外 Deno 实在是缺少一个 killer featue" in the document 《我们并不需要 Deno》.
• Replace the specific occurrence of "Runtime" with "runtimes" in the document 《我们并不需要 Deno》.

Summary of Code Changes

• Corrected the typo "featue" to "feature" in the specified sentence.
• Changed the term "Runtime" to "runtimes" to ensure consistency in terminology.

Decisions Made

• The changes were made to improve the clarity and professionalism of the document. Correcting typos and ensuring consistent terminology helps maintain the quality of the content and enhances readability for users.

Current Status

• The pull request is ready for review. All changes have been made according to the requirements, and no additional tests are necessary for this type of content update.