apparmor: Fix kernel-doc warnings in apparmor/capability.c

Fix kernel-doc warnings:

security/apparmor/capability.c:45: warning: Function parameter
or member 'ab' not described in 'audit_cb'
security/apparmor/capability.c:45: warning: Function parameter
or member 'va' not described in 'audit_cb'
Signed-off-by: Gaosheng Cui <cuigaosheng1@huawei.com>
Signed-off-by: John Johansen <john.johansen@canonical.com>

security/apparmor/capability.c

@@ -38,8 +38,8 @@ static DEFINE_PER_CPU(struct audit_cache, audit_cache);
 
 /**
  * audit_cb - call back for capability components of audit struct
- * @ab - audit buffer   (NOT NULL)
- * @va - audit struct to audit data from  (NOT NULL)
+ * @ab: audit buffer   (NOT NULL)
+ * @va: audit struct to audit data from  (NOT NULL)
  */
 static void audit_cb(struct audit_buffer *ab, void *va)
 {