Fix typo in cinder

tranfers -> transfers
recurse -> recursive
satisified -> satisfied

There are other typos will be fixed in Oslo. The commit is:
https://review.openstack.org/#/c/59319/

Change-Id: I6fc2be0414962f456a827d294e258637af665524
Closes-Bug: #1255908

cinder/api/contrib/volume_transfer.py

@@ -124,7 +124,7 @@ def index(self, req):
 
     @wsgi.serializers(xml=TransfersTemplate)
     def detail(self, req):
-        """Returns a detailed list of tranfers."""
+        """Returns a detailed list of transfers."""
         return self._get_transfers(req, is_detail=True)
 
     def _get_transfers(self, req, is_detail):

cinder/api/xmlutil.py

@@ -599,7 +599,7 @@ def _serialize(self, parent, obj, siblings, nsmap=None):
         # First step, render the element
         elems = siblings[0].render(parent, obj, siblings[1:], nsmap)
 
-        # Now, recurse to all child elements
+        # Now, traverse all child elements
         seen = set()
         for idx, sibling in enumerate(siblings):
             for child in sibling:
@@ -614,7 +614,7 @@ def _serialize(self, parent, obj, siblings, nsmap=None):
                     if child.tag in sib:
                         nieces.append(sib[child.tag])
 
-                # Now we recurse for every data element
+                # Now call this function for all data elements recursively
                 for elem, datum in elems:
                     self._serialize(elem, datum, nieces)
 

cinder/taskflow/exceptions.py

@@ -60,7 +60,7 @@ class JobNotFound(TaskFlowException):
 
 
 class MissingDependencies(InvalidStateException):
-    """Raised when a task has dependencies that can not be satisified."""
+    """Raised when a task has dependencies that can not be satisfied."""
     message = ("%(task)s requires %(requirements)s but no other task produces"
                " said requirements")