Add Sergiu's name to the list of maintainers

Change-Id: I2e8c6af08bf6b718ab81e84a77df6f72592a954b

docs/source/contributing.rst

diff --git a/docs/source/contributing.rst b/docs/source/contributing.rst
index a128e30..cba274c 100644
--- a/docs/source/contributing.rst
+++ b/docs/source/contributing.rst
@@ -118,8 +118,8 @@
 
    When the push succeeds, the console will display a URL showing the
    address of the review. Go to the URL and add at least one of the
-   maintainers (Sameer Agarwal, Keir Mierle, Alex Stewart or William
-   Rucklidge) as reviewers.
+   maintainers (Sameer Agarwal, Keir Mierle, Alex Stewart, William
+   Rucklidge or Sergiu Deitsch) as reviewers.
 
 3. Wait for a review.