AbstractCharSequenceAssert#containsOnlyDigits: minimal improvement of javadoc
@@ -397,7 +397,7 @@ public abstract class AbstractCharSequenceAssert<SELF extends AbstractCharSequen
* This assertion succeeds:
* <pre><code class='java'> assertThat("10").containsOnlyDigits();</code></pre>
*
- * Whereas this assertion fails:
+ * Whereas these assertions fail:
* <pre><code class='java'> assertThat("10$").containsOnlyDigits();
* assertThat("").containsOnlyDigits();</code></pre>
*
