[Trivial] Fix two typos in magnum.

Change-Id: I796be00d3e32738f93a7847ed304a047d584d5a0

api-ref/source/versions.inc

@@ -11,7 +11,7 @@ supports versioning. There are two kinds of versions in Magnum.
 - ''microversions'', which can be requested through the use of the
   ``OpenStack-API-Version``.
 
-Begining with the Newton release, all API requests support the
+Beginning with the Newton release, all API requests support the
 ``OpenStack-API-Version`` header. This header SHOULD be supplied
 with every request; in the absence of this header, each request is treated
 as though coming from an older pre-Newton client. This was done to preserve
@@ -101,4 +101,4 @@ Response Example
 ----------------
 
 .. literalinclude:: samples/versions-01-get-resp.json
-   :language: javascript
+   :language: javascript

magnum/tests/functional/common/datagen.py

@@ -384,7 +384,7 @@ def cluster_template_replace_patch_data(path,
 
 
 def cluster_template_remove_patch_data(path):
-    """Generates ClusterTempalte patch data by removing value
+    """Generates ClusterTemplate patch data by removing value
 
     :param path: path to remove
     :returns: ClusterTemplatePatchCollection with generated data