doc: fix typos in reference

doc/reference/storages.rst

@@ -135,7 +135,7 @@ Demo storages are configured using the ``demostorage`` section::
 ``demostorage`` sections can contain up to 2 storage subsections,
 named ``base`` and ``changes``, specifying the demo storage's base and
 changes storages.  See :meth:`ZODB.DemoStorage.DemoStorage.__init__`
-for more on the base anc changes storages.
+for more on the base and changes storages.
 
 Options:
 
@@ -168,7 +168,7 @@ ZRS
   provides replication from one database to another.  It's most
   commonly used with ZEO.  With ZRS, you create a ZRS primary database
   around a :class:`~ZODB.FileStorage.FileStorage.FileStorage` and in a
-  separate process, you creatre a ZRS secondary storage around any
+  separate process, you create a ZRS secondary storage around any
   :interface:`storage <ZODB.interfaces.IStorage>`. As transactions are
   committed on the primary, they're copied asynchronously to
   secondaries.

doc/reference/zodb.rst

@@ -9,7 +9,7 @@ ZODB module functions
 
 .. method:: DB(storage, *args, **kw)
 
-      Create a databse. See :py:class:`ZODB.DB`.
+      Create a database. See :py:class:`ZODB.DB`.
 
 .. autofunction:: ZODB.connection
 
@@ -125,7 +125,7 @@ TimeStamp (transaction ids)
 
    .. method:: raw()
 
-      Get an 8-byte representatin of the time stamp for use in APIs
+      Get an 8-byte representation of the time stamp for use in APIs
       that require a time stamp.
 
    .. method:: second()