docs: fix the numbering in "Converting an existing Mac checkout" section

docs: fix the numbering in "Converting an existing Mac checkout" section

Due to the code block in the second item, the Markdown engine is not
smart enough to figure out that the next one is related to the other
items and thus should be '3' not '1'.

To fix this, we number the list ourselves rather than letting the Markdown
engine do this work for us.

BUG=None
TEST=load the document in http://dillinger.io/ before this change,
confirm it has the issue, then change it and confirm it has the right
numbering for the list.
R=sdefresne@chromium.org

Committed: https://crrev.com/b8922b4284b443d82da4a36d7b6e73b40250a625
Cr-Commit-Position: refs/heads/master@{#379590}

[sdefresne, 2016-03-07 17:58:30]

The CQ bit was checked by sdefresne@chromium.org

[sdefresne, 2016-03-07 17:58:31]

lgtm

[commit-bot: I haz the power, 2016-03-07 17:59:45]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1775473002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1775473002/1

[commit-bot: I haz the power, 2016-03-07 18:24:57]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-03-07 18:26:21]

Description was changed from

==========
docs: fix the numbering in "Converting an existing Mac checkout" section

Due to the code block in the second item, the Markdown engine is not
smart enough to figure out that the next one is related to the other
items and thus should be '3' not '1'.

To fix this, we number the list ourselves rather than letting the Markdown
engine do this work for us.

BUG=None
TEST=load the document in http://dillinger.io/ before this change,
confirm it has the issue, then change it and confirm it has the right
numbering for the list.
R=sdefresne@chromium.org
==========

to

==========
docs: fix the numbering in "Converting an existing Mac checkout" section

Due to the code block in the second item, the Markdown engine is not
smart enough to figure out that the next one is related to the other
items and thus should be '3' not '1'.

To fix this, we number the list ourselves rather than letting the Markdown
engine do this work for us.

BUG=None
TEST=load the document in http://dillinger.io/ before this change,
confirm it has the issue, then change it and confirm it has the right
numbering for the list.
R=sdefresne@chromium.org

Committed: https://crrev.com/b8922b4284b443d82da4a36d7b6e73b40250a625
Cr-Commit-Position: refs/heads/master@{#379590}
==========

[commit-bot: I haz the power, 2016-03-07 18:26:22]

Patchset 1 (id:??) landed as
https://crrev.com/b8922b4284b443d82da4a36d7b6e73b40250a625
Cr-Commit-Position: refs/heads/master@{#379590}