Add some newlines between distinct setup steps

It is really hard to parse this document. Maybe this will help a tiny
bit.

Change-Id: I2121f000a0fbbc0a5a760e00a22a0fb5be3ef276
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/75854
Commit-Queue: Adam Langley <agl@google.com>
Auto-Submit: David Benjamin <davidben@google.com>
Reviewed-by: Adam Langley <agl@google.com>

CONTRIBUTING.md

diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index ef70b89..606475e 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -22,10 +22,13 @@
 If you have not done so on this machine, you will need to set up a password for
 Gerrit. Sign in with a Google account, visit
 [this link](https://boringssl.googlesource.com/), and click the "Generate
-Password" link in the top right. You must also have a Gerrit account associated with
+Password" link in the top right.
+
+You must also have a Gerrit account associated with
 your Google account.  To do this visit the [Gerrit review server](https://boringssl-review.googlesource.com)
 and click "Sign in" (top right).
-You will also need to prepare your checkout to
+
+Finally, you will need to prepare your checkout to
 [add Change-Ids](https://gerrit-review.googlesource.com/Documentation/cmd-hook-commit-msg.html)
 on commit. Run: