[FIX] auth_saml : fix provider connection without auth_oauth module

auth_saml/views/auth_saml.xml

@@ -4,7 +4,7 @@
     <template id="auth_saml.providers" name="Auth SAML Providers">
         <t t-if="len(saml_providers) &gt; 0">
             <em
-                t-attf-class="d-block text-center text-muted small my-#{len(providers) if len(providers) &lt; 3 else 3}"
+                t-attf-class="d-block text-center text-muted small my-#{len(saml_providers) if len(saml_providers) &lt; 3 else 3}"
             >- or -</em>
             <div class="o_login_saml2 list-group mt-1 mb-1 text-left">
                 <a