Fix typo in control UI file

Author: iakov

plugins/robots/interpreters/nxtKitInterpreter/src/nxtAdditionalPreferences.ui

@@ -43,7 +43,7 @@
        </widget>
       </item>
       <item row="0" column="0">
-       <widget class="qReal::ui::dirPicker" name="compilerPicker" native="true"/>
+       <widget class="qReal::ui::DirPicker" name="compilerPicker" native="true"/>
       </item>
      </layout>
     </widget>
@@ -111,7 +111,7 @@
    <container>1</container>
   </customwidget>
   <customwidget>
-   <class>qReal::ui::dirPicker</class>
+   <class>qReal::ui::DirPicker</class>
    <extends>QWidget</extends>
    <header>qrutils/widgets/dirPicker.h</header>
    <container>1</container>