stackdriver: update docs

docs/sources/features/datasources/stackdriver.md

@@ -158,9 +158,9 @@ Example Result: `compute.googleapis.com/instance/cpu/usage_time - server1-prod`
 
 It is also possible to resolve the name of the Monitored Resource Type. 
 
-| Alias Pattern Format     | Description                                     | Example Result   |
-| ------------------------ | ------------------------------------------------| ---------------- |
-| `{{resource.type}}`      | returns the name of the monitored resource type | `gce_instance`     |
+| Alias Pattern Format | Description                                     | Example Result |
+| -------------------- | ----------------------------------------------- | -------------- |
+| `{{resource.type}}`  | returns the name of the monitored resource type | `gce_instance` |
 
 Example Alias By: `{{resource.type}} - {{metric.type}}`
 
@@ -181,9 +181,9 @@ Variable of the type *Query* allows you to query Stackdriver for various types o
 
 | Name                | Description                                                                                       |
 | ------------------- | ------------------------------------------------------------------------------------------------- |
-| *Mectric Types*     | Returns a list of metric type names that are available for the specified service.                 |
-| *Metric Labels*     | Returns a list of label values for the `metric label` in the specified metric.                    |
-| *Resource Labels*   | Returns a list of label values for the `resource label` in the specified metric.                  |
+| *Metric Types*      | Returns a list of metric type names that are available for the specified service.                 |
+| *Labels Keys*       | Returns a list of keys for `metric label` and `resource label` in the specified metric.           |
+| *Labels Values*     | Returns a list of values for the label in the specified metric.                                   |
 | *Resource Types*    | Returns a list of resource types for the the specified metric.                                    |
 | *Aggregations*      | Returns a list of aggregations (cross series reducers) for the the specified metric.              |
 | *Aligners*          | Returns a list of aligners (per series aligners) for the the specified metric.                    |