misc: replace "ring:" by "jami:"

Change-Id: Ifdee92480145ef56aafd93a914ae10982bd77eb0

developer/jami-identifiers.md

@@ -10,9 +10,9 @@ identifiers used in Jami with relevant examples.
 -   **Registered name** : a username associated to a Jami Infohash on
     the blockchain such as `jeandupont`
 -   **URI** : a Jami or SIP URI such as
-    `ring:3d1112ab2bb089370c0744a44bbbb0786418d40b` or `ring:jeandupont`
+    `jami:3d1112ab2bb089370c0744a44bbbb0786418d40b` or `jami:jeandupont`
     or `<sip:nnnnn@host:5060>`. Must be compliant with [rfc3986](https://tools.ietf.org/html/rfc3986). If it's a SIP URI, it must be compliant with [rfc3261#19.1](https://tools.ietf.org/html/rfc3261#section-19.1).
--   **Canonical URI** : `ring:3d1112ab2bb089370c0744a44bbbb0786418d40b` or `sip:nnnnn@host:5060`. The most simplified form of the URI. Registered name must be resolved, doesn't include <> brackets or display name. Prefixed with the scheme (`ring:` or `sip:` or `sips:`).
+-   **Canonical URI** : `jami:3d1112ab2bb089370c0744a44bbbb0786418d40b` or `sip:nnnnn@host:5060`. The most simplified form of the URI. Registered name must be resolved, doesn't include <> brackets or display name. Prefixed with the scheme (`jami:` or `sip:` or `sips:`).
 -   **User ID**: registered name (preferred) or public key fingerprint. User-facing identifier for an account public key.
 -   **Display name** or **Profile name** : an editable user-defined
     profile name such as `Jean Dupont`.

developer/name-server-protocol.md

@@ -82,7 +82,7 @@ username is returned if one is registered on the name server.
 
 ### Request
 
-A request for the ID `ring:29347542eb07159f316577e1ae16243d152f6b7b`
+A request for the ID `jami:29347542eb07159f316577e1ae16243d152f6b7b`
 is a `GET` request with
 `/addr/`*`29347542eb07159f316577e1ae16243d152f6b7b`* as the URI.