fix for MultiCloud-Architecture

document spelling mistakes and grammatical error

Issue-ID: MULTICLOUD-766

Signed-off-by: anjali.walsatwar <anjali.walsatwar@huawei.com>
Change-Id: I36ceac1944edf1769c033fd6cc64ccd38a253fe7
diff --git a/docs/MultiCloud-Architecture.rst b/docs/MultiCloud-Architecture.rst
index 56a3cc6..f8fe6fa 100644
--- a/docs/MultiCloud-Architecture.rst
+++ b/docs/MultiCloud-Architecture.rst
@@ -14,11 +14,11 @@
 between ONAP and any underlying VIM or Cloud to:
 
 * enable ONAP to deploy and run on multiple infrastructure environments
-* provide a Cloud Mediation Layer supporting multiple infrastructures and
-  network backends so as to effectively prevents vendor lock-in
+* provide a Cloud Mediation Layer, supporting multiple infrastructures and
+  network backends to effectively prevent vendor lock-in
 * decouples the evolution of ONAP platform from the evolution of underlying
   cloud infrastructure, and minimizes the impact on the deployed ONAP while
-  upgrading the underlying cloud infrastructures independently
+  upgrading the underlying cloud infrastructure independently
 
 Besides that, ONAP MultiCloud project enables