Update 11.md with privacy policy and terms of service (#1882)

11.md

@@ -21,6 +21,10 @@ When a relay receives an HTTP(s) request with an `Accept` header of `application
   "supported_nips": <a list of NIP numbers supported by the relay>,
   "software": <string identifying relay software URL>,
   "version": <string version identifier>
+  "privacy_policy": <a link to a text file describing the relay's privacy policy>,
+  "terms_of_service": <a link to a text file describing the relay's term of service>,
+
+
 }
 ```
 
@@ -74,6 +78,16 @@ The relay server implementation MAY be provided in the `software` attribute.  If
 
 The relay MAY choose to publish its software version as a string attribute.  The string format is defined by the relay implementation.  It is recommended this be a version number or commit identifier.
 
+### Privacy Policy
+
+The relay owner/admin MAY choose to link to a privacy policy document, which describes how the relay utilizes user data. Data collection, data usage, data retention, monetization of data, and third party data sharing SHOULD be included.
+
+### Terms of Service
+
+The relay owner/admin MAY choose to link to a terms of service document.
+
+
+
 Extra Fields
 ------------