Tighten middleware spec from collection to vector

This avoids messing up the order of middleware chain accidentally.

modules/reitit-ring/src/reitit/ring/spec.cljc

@@ -8,7 +8,7 @@
 ;; Specs
 ;;
 
-(s/def ::middleware (s/coll-of #(satisfies? middleware/IntoMiddleware %)))
+(s/def ::middleware (s/coll-of #(satisfies? middleware/IntoMiddleware %) :kind vector?))
 (s/def ::get map?)
 (s/def ::head map?)
 (s/def ::post map?)

test/cljc/reitit/ring_spec_test.cljc

@@ -81,7 +81,7 @@
   (testing "middleware cannot be a list"
     (is (thrown-with-msg?
          ExceptionInfo
-         #":reitit.ring.spec/invalid-specs"
+         #"Invalid route data"
          (ring/router
           ["/api" {:handler    identity
                    :middleware '()}]