* notes/fs-improvements.txt: Don't say base64 when meant base36 or base62.
* notes/fs-improvements.txt: Don't say base64 when meant base36 or base62.

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