Update docs.bazel.build navigation link from Skydoc to Stardoc
RELNOTES:
@@ -331,7 +331,7 @@ nav: docs
<ul class="collapse sidebar-nav sidebar-submenu" id="starlark-practices">
<li><a href="/versions/{{ current_version }}/skylark/bzl-style.html">.bzl style guide</a></li>
<li><a href="/versions/{{ current_version }}/skylark/testing.html">Testing extensions</a></li>
- <li><a href="https://skydoc.bazel.build" target="_blank">Documenting rules</a></li>
+ <li><a href="https://github.com/bazelbuild/stardoc" target="_blank">Documenting rules with Stardoc</a></li>
<li><a href="https://github.com/bazelbuild/buildtools/tree/master/buildifier">Linting</a></li>
<li><a href="/versions/{{ current_version }}/skylark/performance.html">Optimizing performance</a></li>
<li><a href="/versions/{{ current_version }}/skylark/deploying.html">Deploying rules</a></li>
