Rename list-in-table test to table-block-operator

Putting a list in a table cell requires using the AsciiDoc "a" column
operator which enables block-level styling (by nesting a separate
document). Support for a nested documents like this is the underlying
problem being fixed here. So this commit renames the test to make that
more clear.

<https://docs.asciidoctor.org/asciidoc/latest/tables/format-column-content/>

test/black-box-docs/list-in-table/_oops.html → test/black-box-docs/table-block-operator/_oops.html

@@ -1,6 +1,6 @@
 <div id="toc" class="toc">
 <div id="toctitle">Table of Contents</div>
-<p><span class="toc-root"><a href="list-in-table.html">TOP</a></span></p><ul class="sectlevel1">
+<p><span class="toc-root"><a href="table-block-operator.html">TOP</a></span></p><ul class="sectlevel1">
 <li><a href="_second.html">SECOND</a>
 <ul class="sectlevel2">
 <li><a href="_oops.html"><span class="toc-current">OOPS</span></a>
@@ -41,5 +41,5 @@ <h4 id="_danger">DANGER</h4>
 </div>
 </div>
 <div class="paragraph nav-footer">
-<p>↑ Up: <a href="_second.html">SECOND</a> | ⌂ Home: <a href="list-in-table.html">TOP</a></p>
+<p>↑ Up: <a href="_second.html">SECOND</a> | ⌂ Home: <a href="table-block-operator.html">TOP</a></p>
 </div>

test/black-box-docs/list-in-table/_second.html → test/black-box-docs/table-block-operator/_second.html

@@ -1,6 +1,6 @@
 <div id="toc" class="toc">
 <div id="toctitle">Table of Contents</div>
-<p><span class="toc-root"><a href="list-in-table.html">TOP</a></span></p>
+<p><span class="toc-root"><a href="table-block-operator.html">TOP</a></span></p>
 </div>
 <div class="sect1">
 <h2 id="_second">SECOND</h2>
@@ -15,5 +15,5 @@ <h2 id="_second">SECOND</h2>
 </div>
 </div>
 <div class="paragraph nav-footer">
-<p>↑ Up: <a href="list-in-table.html">TOP</a> | Next: <a href="_oops.html">OOPS</a> →</p>
+<p>↑ Up: <a href="table-block-operator.html">TOP</a> | Next: <a href="_oops.html">OOPS</a> →</p>
 </div>

test/black-box-docs/list-in-table/list-in-table.html → test/black-box-docs/table-block-operator/table-block-operator.html

@@ -1,6 +1,6 @@
 <div id="toc" class="toc">
 <div id="toctitle">Table of Contents</div>
-<p><span class="toc-root toc-current"><a href="list-in-table.html">TOP</a></span></p><ul class="sectlevel1">
+<p><span class="toc-root toc-current"><a href="table-block-operator.html">TOP</a></span></p><ul class="sectlevel1">
 <li><a href="_second.html">SECOND</a>
 </li>
 </ul>