Put SAML callback URI under /_synapse/client. (#9289)

docs/sample_config.yaml

@@ -1566,10 +1566,10 @@ trusted_key_servers:
 # enable SAML login.
 #
 # Once SAML support is enabled, a metadata file will be exposed at
-# https://<server>:<port>/_matrix/saml2/metadata.xml, which you may be able to
+# https://<server>:<port>/_synapse/client/saml2/metadata.xml, which you may be able to
 # use to configure your SAML IdP with. Alternatively, you can manually configure
 # the IdP to use an ACS location of
-# https://<server>:<port>/_matrix/saml2/authn_response.
+# https://<server>:<port>/_synapse/client/saml2/authn_response.
 #
 saml2_config:
   # `sp_config` is the configuration for the pysaml2 Service Provider.

docs/workers.md

@@ -269,7 +269,7 @@ using):
     ^/_synapse/client/oidc/callback$
 
     # SAML requests.
-    ^/_matrix/saml2/authn_response$
+    ^/_synapse/client/saml2/authn_response$
 
     # CAS requests.
     ^/_matrix/client/(api/v1|r0|unstable)/login/cas/ticket$