Fix some spelling errors in docstrings from 2015. (elastic#571)

Author: nfsec

elasticsearch/connection_pool.py

@@ -85,8 +85,8 @@ class ConnectionPool(object):
  put on a timeout (if it fails N times in a row the timeout is exponentially
  longer - the formula is `default_timeout * 2 ** (fail_count - 1)`). When
  the timeout is over the connection will be resurrected and returned to the
- live pool. A connection that has been peviously marked as dead and
- succeedes will be marked as live (it's fail count will be deleted).
+ live pool. A connection that has been previously marked as dead and
+ succeeds will be marked as live (its fail count will be deleted).
  """
  def __init__(self, connections, dead_timeout=60, timeout_cutoff=5,
  selector_class=RoundRobinSelector, randomize_hosts=True, **kwargs):

elasticsearch/transport.py

@@ -74,7 +74,7 @@ def __init__(self, hosts, connection_class=Urllib3HttpConnection,
  will be serialized and passed as a query parameter `source`.
 
  Any extra keyword arguments will be passed to the `connection_class`
- when creating and instance unless overriden by that connection's
+ when creating and instance unless overridden by that connection's
  options provided as part of the hosts parameter.
  """