docs: update eip6963 config in demos

[yutingzhao1991]

close #1123

统一下 demos 的 eip6963 的配置

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[thinkasany]

packages下的demo修改需要加changelog吗

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.99%. Comparing base (a964d5d) to head (d416f8f).
Report is 3 commits behind head on main.

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##             main    #1150   +/-   ##
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  Coverage   99.99%   99.99%           
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  Files         846      846           
  Lines       18038    18038           
  Branches     1569     1569           
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  Hits        18037    18037           
  Misses          1        1           

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[yutingzhao1991]

packages下的demo修改需要加changelog吗

不需要，不影响包的实现，只是官网的 demo