add TODO to show that I don't understand the ellision feature

For example, with `(match? [#{2}] [#{1 2}])` it currently gives
`[#{(unexpected 1)} ...]`

This feels misleading to me because there aren't more elements in the
vector that are being elided.

It should be more like `[#{(unexpected 1) ...}]` or at worst
something like `[#{(unexpected 1) ...} ...]`

Author: philomates

test/clj/matcher_combinators/config_test.clj

@@ -55,6 +55,9 @@
              (c/match [#{2}] [#{1 2}])))))
 
   (config/enable-abbreviation!)
+  ;; TODO PLM: `[#{(unexpected 1)} ...]` feels not completely correct.
+  ;; shouldn't it be `[#{(unexpected 1) ...}]` or `[#{(unexpected 1)} ...]`
+  ;; instead?
   (is (= (str "[#{(unexpected " (colorize/red 1) ")} ...]\n")
          (printer/as-string
            (:matcher-combinators.result/value