Fix a few spelling errors in comments.

apps/search/sphinxapi.py

@@ -111,7 +111,7 @@ class SphinxClient:
         self._mode          = SPH_MATCH_ALL                 # query matching mode (default is SPH_MATCH_ALL)
         self._weights       = []                            # per-field weights (default is 1 for all fields)
         self._sort          = SPH_SORT_RELEVANCE            # match sorting mode (default is SPH_SORT_RELEVANCE)
-        self._sortby        = ''                            # attribute to sort by (defualt is "")
+        self._sortby        = ''                            # attribute to sort by (default is "")
         self._min_id        = 0                             # min ID to match (default is 0)
         self._max_id        = 0                             # max ID to match (default is UINT_MAX)
         self._filters       = []                            # search filters

apps/sumo/models.py

@@ -6,7 +6,7 @@ import settings
 from sumo.urlresolvers import get_url_prefix
 from sumo_locales import INTERNAL_MAP
 
-# Our apps should subclass BaseManager instead of models.Manager or
+# Our apps should subclass ManagerBase instead of models.Manager or
 # caching.base.CachingManager directly.
 ManagerBase = caching.base.CachingManager