developer-guide: Version scheme changed to Semantic Versioning

Change-Id: I72f81f650ce1cb601cb0ac927e8fc5ce314b3f4c
diff --git a/Documentation/ b/Documentation/
index 1716e80..f0877c5 100644
--- a/Documentation/
+++ b/Documentation/
@@ -120,11 +120,9 @@
 for PGP key setup and Google Cloud Storage access setup.
-First, increment `GITILES_VERSION` in `version.bzl`. Technically, Gitiles uses
-["build number" scheme](,
-which in practice just means incrementing the last component (after the `-`) by
-one. Get your change reviewed and submitted.
+First, increment `GITILES_VERSION` in `version.bzl`, Gitiles uses
+[Semantic Versioning](
+Get your change reviewed and submitted.
 Then, run: