Remove RFC language from service instance config text.

index.html

@@ -671,12 +671,12 @@ <h4>OAuth 2.0</h4>
     <section>
       <h3>Service Instances</h3>
       <p>
-Service configuration MAY be determined by administrators on per instance basis.
-Instance configuration MAY include, but is not limited to, credential format, key options, credential status mechanisms, and/or credential templates.
-Administrators SHOULD configure service instances such that `options` included in client requests cannot result in incorrect action or problematic responses by the service.
+Service configuration is determined by administrators on per instance basis.
+Instance configuration can include, but is not limited to, credential format, key options, credential status mechanisms, and/or credential templates.
+Administrators are expected to configure service instances such that `options` included in client requests cannot result in incorrect action or problematic responses by the service.
       </p>
       <p>
-A coordinator instance MAY have access to multiple service instances in order to support different use cases.
+A coordinator instance can have access to multiple service instances in order to support different use cases.
 Runtime discovery of service instance configuration is not supported by the VC API as services are expected to be known by the coordinator at the time of coordinator deployment.
       </p>
     </section>