Update docs OAM architecture diagram

in addtion some editorial changes were made.

IssueID: OAM-171
Change-Id: Id623786e71f06a98140e2121d7a4b8db0b8d4716
Signed-off-by: demx8as6 <martin.skorupski@highstreet-technologies.com>
diff --git a/docs/sdnr_Docker_Image_configuration.rst b/docs/sdnr_Docker_Image_configuration.rst
index 5297a09..4a02088 100644
--- a/docs/sdnr_Docker_Image_configuration.rst
+++ b/docs/sdnr_Docker_Image_configuration.rst
@@ -14,10 +14,10 @@
 The container is available as Alpine and Ubuntu version. The description
 uses examples for the Alpine version.
 
-The alpine based sdnc docker imanges are stored in \ `ONAP Nexus sdnc
+The alpine based sdnc docker images are stored in \ `ONAP Nexus sdnc
 image <https://nexus3.onap.org:10001/v2/onap/sdnc-image/tags/list>`__.
 
-The docker image contains a Opendaylight distribution in a standard
+The docker image contains a OpenDaylight distribution in a standard
 configuration and ONAP/SDN-R specific microservices.
 
 The Root location of ODL Karaf directory structure