git-svn doc: mention "svn-remote.<name>.include-paths"
git-svn doc: mention "svn-remote.<name>.include-paths"

Mention the configuration variable in a way similar to how
"svn-remote.<name>.ignore-paths" is mentioned.

Signed-off-by: Brett Randall <3a817d01b0aca4da51b95766d5e85950536c2c6e@gmail.com>
Signed-off-by: Junio C Hamano <a6723cc3f76163bf7adb636a73ac3b0ceb3e6b9b@pobox.com>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git