[JENKINS-21486] Follow-up

Display of shortName of disabled plugin is enough. Fix copy-paste error
in the message for disabled dependencies

core/src/main/java/hudson/PluginWrapper.java

@@ -573,7 +573,7 @@ public class PluginWrapper implements Comparable<PluginWrapper>, ModelObject {
                         obsoleteDependencies.add(dependency.getShortName() + "(" + dependency.getVersion() + " < " + d.version + ")");
                     }
                 } else {
-                    disabledDependencies.add(d.toString());
+                    disabledDependencies.add(d.shortName);
                 }
 
             }
@@ -600,7 +600,7 @@ public class PluginWrapper implements Comparable<PluginWrapper>, ModelObject {
         if (!disabledDependencies.isEmpty()) {
             boolean plural = disabledDependencies.size() > 1;
             messageBuilder.append(plural ? "Dependencies " : "Dependency ")
-                    .append(Util.join(missingDependencies, ", "))
+                    .append(Util.join(disabledDependencies, ", "))
                     .append(" ").append(plural ? "are" : "is")
                     .append(" disabled. ");
         }