fix typo in HACKING.rst and move workload-template.rst to root

Change-Id: I936ed441644a159bea4437f6be83c728693ddef5

HACKING.rst

@@ -35,23 +35,23 @@ Submission Process
 
     git checkout -b <workload-name>
 
-#. Create the following directory structures under `workload-ref-archs <workload-ref-archs>`_
+#. Create the following directory structures under `doc/source <doc/source>`_
    for the new workload::
 
     <workload-name>
     <workload-name>/<workload-name>.rst
-    <workload-name>/figure
+    <workload-name>/figures
     <workload-name>/sample/heat
     <workload-name>/sample/murano
 
    .. list-table::
       :widths: 15 25
 
-      * - <workload-name>.rst 
+      * - <workload-name>.rst
         - Provides a full description of the workload.
-          Please follow the structure in `workload-template.rst <workload-ref-archs/workload-template.rst>`_
+          Please follow the structure in `workload-template.rst <workload-template.rst>`_
 
-      * - figure
+      * - figures
         - Include all images in this folder
 
       * - sample/heat

workload-template.rst

@@ -14,7 +14,7 @@ OpenStack for <workload>
 This section provides detailed information on which OpenStack services
 are required to support this workload.
 
-Please include all **core** and **optional** services. 
+Please include all **core** and **optional** services.
 
 Please provide a brief description of each services used in this document.
 For example:
@@ -56,10 +56,15 @@ sufficient information to explain what the sample code is trying to achieve.
 Scope and Assumptions
 ---------------------
 
-This section describe the specific scope, limitation or assumption made for
+This section describes the specific scope, limitation or assumption made for
 this workload reference architecture.
 
 For example: The Heat template provided for this reference architecture
 assumes that the web application workload is deployed in a single-region,
 single-zone OpenStack environment. The deployment in a multi-zone/multi-region
 environment is outside the scope of this document.
+
+Summary
+-------
+
+This section concludes the document.