[GitHub] incubator-weex-site issue #105: Update index.md

[imyzf]

Github user imyzf commented on the issue:

    https://github.com/apache/incubator-weex-site/pull/105
  
    Thanks for your PR. I have fixed this in #118. It would be better to use 
relative path rather than absolute path `weex.apache.org`.


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