auth/saml: spelling mistake (bug #865054)

Typo with 'errorbadinstitutioncombo' - comp^bination

Change-Id: I40a1d5f1758590ad9157d922df2cd8cee3bc3b0b
Signed-off-by: Piers Harding <piers@catalyst.net.nz>

htdocs/auth/saml/lang/en.utf8/auth.saml.php

@@ -37,7 +37,7 @@ $string['errnosamluser'] = 'No User found';
 $string['errorbadlib'] = 'SimpleSAMLPHP lib directory %s is not correct.';
 $string['errorbadconfig'] = 'SimpleSAMLPHP config directory %s is in correct.';
 $string['errorbadcombo'] = 'You can only choose user auto creation if you have not selected remoteuser';
-$string['errorbadinstitutioncombo'] = 'There is already an existing authinstance with this institutionattribute and institutionvalue compination';
+$string['errorbadinstitutioncombo'] = 'There is already an existing authinstance with this institutionattribute and institutionvalue combination';
 $string['errormissinguserattributes'] = 'You seem to be authenticated but we did not receive the required user attributes. Please check that your Identity Provider releases these SSO fields for First Name, Surname, and Email to the Service Provider Mahara is running on or inform the webmaster of this server.';
 //$string['idpidentity'] = 'IdP Identity Service';
 $string['institutionattribute'] = 'Institution attribute (contains "%s")';