Fixed typos in submitting data doc

docs/submitting_data.rst

@@ -52,7 +52,6 @@ following data structure:
                 ...
             ]
         }
-        }
     ]
 
 Job Collections
@@ -209,7 +208,7 @@ data structures to send, do something like this.
     #
     # data structure validation is automatically performed here, if validation
     # fails a TreeherderClientError is raised
-    client.post_collection('mozilla-central', trc)
+    client.post_collection('mozilla-central', trsc)
 
 At any time in building a data structure, you can examine what has been
 created by looking at the `data` property.  You can also call the `validate`