manuals: improve the width of diagrams

Better for EPUB output in particular
- Make some diagrams wider when necessary
- Remove ":align: center" when we have ":width: 100%"
- Update the standards.md files to mention this

(From yocto-docs rev: 848ba7bd8984cc3f4bf6b818259865011cde0476)

Signed-off-by: Michael Opdenacker <michael.opdenacker@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 3 insertions, 3 deletions

diff --git a/documentation/overview-manual/yp-intro.rst b/documentation/overview-manual/yp-intro.rst
index f240ce0f4b..a2e0862459 100644
--- a/documentation/overview-manual/yp-intro.rst
+++ b/documentation/overview-manual/yp-intro.rst
@@ -24,7 +24,7 @@ software customizations and build interchange for multiple hardware
 platforms as well as software stacks that can be maintained and scaled.
 
 .. image:: figures/key-dev-elements.png
-    :align: center
+    :width: 100%
 
 For further introductory information on the Yocto Project, you might be
 interested in this
@@ -638,7 +638,7 @@ these items that make up the Poky repository in the
 The following figure illustrates what generally comprises Poky:
 
 .. image:: figures/poky-reference-distribution.png
-    :align: center
+    :width: 100%
 
 -  BitBake is a task executor and scheduler that is the heart of the
    OpenEmbedded build system.
@@ -720,7 +720,7 @@ accomplish image and SDK generation. The following figure overviews that
 workflow:
 
 .. image:: figures/YP-flow-diagram.png
-    :align: center
+    :width: 100%
 
 Following is a brief summary of the "workflow":