Fix typo: then -> than.
RELNOTES: None.
@@ -2716,7 +2716,7 @@ echo "STABLE_USER_NAME $USER"
<h4 id="flag--test_verbose_timeout_warnings"><code class='flag'>--test_verbose_timeout_warnings</code></h4>
<p>
This option tells Bazel to explicitly warn the user if a test's timeout is
-significantly longer then the test's actual execution time. While a test's
+significantly longer than the test's actual execution time. While a test's
timeout should be set such that it is not flaky, a test that has a highly
over-generous timeout can hide real problems that crop up unexpectedly.
</p>
