Document that core plugins are bundled in release.war

Change-Id: Id2a9f05dc2fd6fd1980866a785135da5d8b00522
diff --git a/Documentation/dev-bazel.txt b/Documentation/dev-bazel.txt
index dc81f44..a6f8f5f 100644
--- a/Documentation/dev-bazel.txt
+++ b/Documentation/dev-bazel.txt
@@ -35,7 +35,7 @@
 === Gerrit Release WAR File
 
 To build the Gerrit web application that includes the GWT UI, the
-PolyGerrit UI and documentation:
+PolyGerrit UI, core plugins and documentation:
 
 ----
   bazel build release