Changing HOME to PORTFOLIO

Checklist

• [x] I have read the newlest tutorials and know the correct effect of the functional design.
• [x] There is no similar question on existing issues (including closed ones).
• [x] I have tried to find the answer on Jekyll Forum and StackOverflow.
• [x] My question is based on the latest code of the master branch.

Description

I would like to change the name of HOME to something like PORTFOLIO

I've tried to change that on _site/index.html:

<li class="nav-item">
  <a href="/" class="nav-link">
    <i class="fa-fw fas fa-home ml-xl-3 mr-xl-3 unloaded"></i>
    <span>PORTFOLIO</span>
  </a>
</li>
<!-- the real tabs -->

but everytime I run the website locally _site/index.html seems to be overwritten with HOME again.

I'm also having the same issue when trying to change Trending Tags to tags. Any thoughts?