Fix typo.  "allpath" doesn't exist.
RELNOTES: none.
@@ -1351,7 +1351,7 @@ maxrank
</p>
<p>
- This output format is particularly useful for <code>allpath</code>,
+ This output format is particularly useful for <code>allpaths</code>,
<code>deps</code>, or <code>rdeps</code> queries, where the result
includes a <em>set of paths</em> that cannot be easily visualized when
rendered in a linear form, such as with <code>--output label</code>.
