Update graph/patterns/viewpoint.md

Co-authored-by: Dan Kershaw [MSFT] <[email protected]>

Author: OlgaPodo

graph/patterns/viewpoint.md

@@ -11,7 +11,7 @@ A shared resource, such as a website or a group message, may have different stat
 
 The viewpoint pattern provides a solution to how to model an individual user context on a shared resource using a `viewpoint` structural property on an API entity type.
 For example, the `viewpoint` property can indicate whether a message is read, deleted, or flagged for a given user. 
-The consistent naming convention ensures that when a developer uses Graph APIs all ‘viewpoints’ structural properties represent type specific user context across different M365 services and features.
+The consistent naming convention ensures that when a developer uses Graph APIs all `viewpoint` structural properties represent type specific user context across different M365 services and features.
 
 This pattern simplifies the API client logic by hiding the state transition details and providing state persistency on the server side. The server can manage the different viewpoints for the shared resource without exposing additional complexity to the client. To support queries for a user state the `viewpoint` property should support filtering.
 ## Issues and considerations