captures: don't distinguish captures from normal types but leave capture for the same type wildcard

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/genericsHighlighting/IDEA57286.java

@@ -1,6 +1,6 @@
 class A<T> {
     <S extends A<? extends T>> void foo(){}
     void bar(A<?> a){
-        a.<<error descr="Type parameter 'A' is not within its bound; should extend 'A<capture<?>>'">A<?></error>>foo();
+        a.<<error descr="Type parameter 'A' is not within its bound; should extend 'A<? extends capture<?>>'">A<?></error>>foo();
     }
 }