Fix docstring typo from r21739.
Fix docstring typo from r21739.

* subversion/include/svn_wc.h
  (svn_wc_canonicalize_svn_prop_get_file_t): refer to correct function.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion