releases: create -rc1 two weeks before the release

Create the -rc1 tag two weeks before the release rather than one to
allow for more time testing. This schedule was followed for 4.6.0
already.

Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
diff --git a/general/releases.rst b/general/releases.rst
index 3856e03..e9b9ad4 100644
--- a/general/releases.rst
+++ b/general/releases.rst
@@ -86,7 +86,7 @@
 *****************
 There are certain steps that needs to be done when making a release. This
 checklist here serves as guidance to the one in charge of making a new release.
-Roughly start with this 2-3 weeks before the targeted release date.
+Start with this 3 weeks before the targeted release date.
 
 tl;dr
 =====
@@ -107,19 +107,19 @@
       - Inform maintainers about upcoming release
       -
 
-    * - 1w
+    * - 2w
       - Increment the revision number in `mk/config.mk`_
       - ``CFG_OPTEE_REVISION_MAJOR ?= 3`` ``CFG_OPTEE_REVISION_MINOR ?= x``
 
-    * - 1w
+    * - 2w
       - Create release candidate tag in optee_* + build.git
       - git tag -a 3.x.y-rc1 -m "3.x.y-rc1"
 
-    * - 1w
+    * - 2w
       - Let maintainers know about the release candidate tag
       -
 
-    * - 1w
+    * - 2w
       - Test platform builds / devices
       -