Fix typo in doc string.
Fix typo in doc string.

* subversion/include/svn_wc.h
  (svn_wc_add_repos_file2): Change "base-text" to "text-base".

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