Merge pull request #40 from data-integrations/docs/CDAP-14469-fix-button-text

CDAP-14469 change Extract to Get for consistency

Author: albertshau

widgets/BigQueryTable-batchsource.json

@@ -40,7 +40,7 @@
           },
           "plugin-function": {
             "method": "POST",
-            "label": "Extract Schema",
+            "label": "Get Schema",
             "widget": "outputSchema",
             "output-property": "schema",
             "plugin-method": "getSchema",