Update sigs.yaml with link to charter

sig-auth/README.md

@@ -10,6 +10,8 @@ To understand how this file is generated, see https://git.k8s.io/community/gener
 
 Covers improvements to Kubernetes authorization, authentication, and cluster security policy.
 
+The [charter](charter.md) defines the scope and governance of the Auth Special Interest Group.
+
 ## Meetings
 * Regular SIG Meeting: [Wednesdays at 11:00 PT (Pacific Time)](https://docs.google.com/document/d/1FQx0BPlkkl1Bn0c9ocVBxYIKojpmrS1CFP5h0DI68AE/edit) (biweekly). [Convert to your timezone](http://www.thetimezoneconverter.com/?t=11:00&tz=PT%20%28Pacific%20Time%29).
   * [Meeting notes and Agenda](https://docs.google.com/document/d/1woLGRoONE3EBVx-wTb4pvp4CI7tmLZ6lS26VTbosLKM/edit#).

sig-auth/charter.md

@@ -7,16 +7,17 @@ the Roles and Organization Management outlined in [sig-governance].
 
 SIG Auth is responsible for the design, implementation, and maintenance of features in
 Kubernetes that control and protect access to the API and other core components. This includes
-authentication and authorization, but also encompasses features like auditing and some policy
-(see below).
+authentication and authorization, but also encompasses features like auditing and some security
+policy (see below).
 
 ### In scope
 
 Link to SIG section in [sigs.yaml]
 
 #### Code, Binaries and Services
 
-- Kubernetes authentication, authorization, audit and policy features. Examples include:
+- Kubernetes authentication, authorization, audit and security policy features. Examples
+  include:
     - Authentication, authorization and audit interfaces and extension points
     - Authentication implementations (service accounts, OIDC, authenticating proxy, webhook,
       ...)

sigs.yaml

@@ -252,7 +252,7 @@ sigs:
     mission_statement: >
       Covers improvements to Kubernetes authorization, authentication, and
       cluster security policy.
-    charter_link:
+    charter_link: charter.md
     label: auth
     leadership:
       chairs: