[Trivialfix]Fix typos in freezer

Fix the typos in project openstack-freezer

Change-Id: I84700c96ac19f14b786ffa10f79195b78ea2b366

freezer/exceptions/utils.py

@@ -1,5 +1,5 @@
 class TimeoutException(Exception):
-    msg = "Timeout has been occured."
+    msg = "Timeout has been occurred."
 
     def __init__(self, message=None, **kwargs):
         if not message:

freezer/storage/fslike.py

@@ -82,7 +82,7 @@ class FsLikeStorage(physical.PhysicalStorage):
         """
         :param stream: data
         :param package_name: path
-        :param headers: backup metadata infomation
+        :param headers: backup metadata information
         :return:
         """
         split = package_name.rsplit('/', 1)