Fix full_name example in README

Change-Id: I1be732aed6d8976f44c8831b4a5ef597e1a04978
Related-prod: #PROD-20324 (PROD:20324)
diff --git a/README.rst b/README.rst
index 690dc0f..a4c93d5 100644
--- a/README.rst
+++ b/README.rst
@@ -208,7 +208,7 @@
         account:
           username:
             enabled: true
-            full_name: hovno
+            full_name: User Name
             email: mail@newt.cz
             public_key: rsassh
             http_password: passwd