Update src/boot/boot.janet

Co-authored-by: Michael Camilleri <mike@inqk.net>

src/boot/boot.janet

@@ -758,7 +758,7 @@
   (compare-reduce = xs))
 
 (defn compare<
-  ``Equivalent of `<` but using compare function instead of primitive comparator.``
+  ``Equivalent of `<` but using polymorphic `compare` instead of primitive comparator.``
   [& xs]
   (compare-reduce < xs))