Small tweaks to test writing document.
Small tweaks to test writing document.

* notes/test-writing
  (Test structure): Fix typo.
  (On-disk state): Recommend using get_virginal_state.

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