Fix indentation spacing for SAMLVirtualCoFrontend yaml example

Fixed the indentation spacing for the SAMLVirtualCoFrontend example
yaml.

Author: skoranda

example/plugins/frontends/saml2_virtualcofrontend.yaml.example

@@ -24,15 +24,15 @@ config:
         - contact_type: technical
           email_address: [email protected]
           given_name MESS Technical Support
-       # SAML attributes and static values about the CO to be asserted for each user.
-       # The key is the SATOSA internal attribute name.
-       co_static_saml_attributes:
-         organization: Medium Engergy Synchrotron Source
-         countryname: US
-         friendlycountryname: United States
-         noreduorgacronym:
-           - MESS
-           - MeSyncS
+      # SAML attributes and static values about the CO to be asserted for each user.
+      # The key is the SATOSA internal attribute name.
+      co_static_saml_attributes:
+        organization: Medium Engergy Synchrotron Source
+        countryname: US
+        friendlycountryname: United States
+        noreduorgacronym:
+          - MESS
+          - MeSyncS
     - encodeable_name: MTS
       organization:
         display_name: Milwaukee Theological Seminary