rb3|rb5: AOSP build target is renamed to db845c-trunk_staging-userdebug

Change-Id: Id7ffeea0d545597b4a8eaaf745ef45ab6854f173
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
diff --git a/docs/devices/rb3.rst b/docs/devices/rb3.rst
index f4309b4..ff9ed68 100644
--- a/docs/devices/rb3.rst
+++ b/docs/devices/rb3.rst
@@ -60,7 +60,7 @@
 Compile AOSP from sources for RB3
 ---------------------------------
 
-#. Download the AOSP source tree and build db845c-userdebug build target:
+#. Download the AOSP source tree and build db845c-trunk_staging-userdebug build target:
 
 ::
 
diff --git a/docs/devices/rb5.rst b/docs/devices/rb5.rst
index b9e3577..d7ea784 100644
--- a/docs/devices/rb5.rst
+++ b/docs/devices/rb5.rst
@@ -58,7 +58,7 @@
 Compile AOSP from sources for RB5
 ---------------------------------
 
-#. Download the AOSP source tree and build rb5-userdebug build target:
+#. Download the AOSP source tree and build db845c-trunk_staging-userdebug build target:
 
 ::