Merge pull request #393 from cds-hooks/iss212-EHR-may-call-discovery

EHR MAY call discovery endpoint

Author: isaacvetter

docs/specification/1.0.md

@@ -34,7 +34,7 @@ A CDS Service provider SHALL expose its Discovery endpoint at"
 ```
 ### HTTP Request
 
-The discovery endpoint SHALL always be available at `{baseUrl}/cds-services`. For example, if the `baseUrl` is https://example.com, the EHR would invoke:
+The discovery endpoint SHALL always be available at `{baseUrl}/cds-services`. For example, if the `baseUrl` is https://example.com, the EHR MAY invoke:
 
 `GET https://example.com/cds-services`