Added --include-ignored to cargo test options

This option has been stabilized in rust-lang/rust#80053

Author: trevarj

src/doc/src/commands/cargo-test.md

@@ -47,6 +47,9 @@ writing doc tests.
 
 <dl>
 
+<dt class="option-term" id="option-cargo-test---include-ignored"><a class="option-anchor" href="#option-cargo-test---include-ignored"></a><code>--include-ignored</code></dt>
+<dd class="option-desc">Include tests that are marked with #[ignore].</dd>
+
 <dt class="option-term" id="option-cargo-test---no-run"><a class="option-anchor" href="#option-cargo-test---no-run"></a><code>--no-run</code></dt>
 <dd class="option-desc">Compile, but don't run tests.</dd>