Fix typos

Author: knaperek

djangosaml2/views.py

@@ -170,8 +170,8 @@ def login(request,
         try:
             # do not sign the xml itself, instead use the sigalg to
             # generate the signature as a URL param
-            sig_alg_option_map = {'sha1': SIG_RSA_SHA1',
-                                  'sha256': SIG_RSA_SHA256'}
+            sig_alg_option_map = {'sha1': SIG_RSA_SHA1,
+                                  'sha256': SIG_RSA_SHA256}
             sig_alg_option = getattr(conf, '_sp_authn_requests_signed_alg', 'sha1')
             sigalg = sig_alg_option_map[sig_alg_option] if sign_requests else None
             session_id, result = client.prepare_for_authenticate(