COMP: Fix doc-string of TreeIteratorBase::RemoveChild from Deprecated

Problem inadvertently introduced by d58bf56.

The error message was:

C:\Misc\ITK-patches-rel\Modules\Compatibility\Deprecated\include\itkTreeIteratorBase.hxx(238,30): error C2039: 'RemoveChild': is not a member of 'itk::TreeIteratorBase<TTreeType>'
C:\Misc\ITK-patches-rel\Modules\Compatibility\Deprecated\include\itkTreeIteratorBase.hxx(238,30): error C2039: 'RemoveChild': is not a member of 'itk::TreeIteratorBase<TTreeType>'
  (compiling source file '../../../../../ITK-patches-rel/Modules/Compatibility/Deprecated/test/itkTreeContainerTest.cxx')
      C:\Misc\ITK-patches-rel\Modules\Compatibility\Deprecated\include\itkTreeIteratorBase.h(68,27):
      see declaration of 'itk::TreeIteratorBase<TTreeType>'
C:\Misc\ITK-patches-rel\Modules\Compatibility\Deprecated\include\itkTreeIteratorBase.hxx(239,1): error C2447: '{': missing function header (old-style formal list?)
  (compiling source file '../../../../../ITK-patches-rel/Modules/Compatibility/Deprecated/test/itkTreeContainerTest.cxx')
  (compiling source file '../../../../../ITK-patches-rel/Modules/Compatibility/Deprecated/test/itkTreeContainerTest2.cxx')
      C:\Misc\ITK-patches-rel\Modules\Compatibility\Deprecated\include\itkTreeIteratorBase.h(68,27):
      see declaration of 'itk::TreeIteratorBase<TTreeType>'
C:\Misc\ITK-patches-rel\Modules\Compatibility\Deprecated\include\itkTreeIteratorBase.hxx(239,1): error C2447: '{': missing function header (old-style formal list?)
  (compiling source file '../../../../../ITK-patches-rel/Modules/Compatibility/Deprecated/test/itkTreeContainerTest2.cxx')

Author: dzenanz

Modules/Compatibility/Deprecated/include/itkTreeIteratorBase.h

@@ -147,7 +147,7 @@ class ITK_TEMPLATE_EXPORT TreeIteratorBase
   /** Remove a child.
    *
    * Removes its child nodes as well.
-   * /
+   */
   virtual bool
   RemoveChild(int number);