Add edit sheet docs for Google Sheets

source/_integrations/google_sheets.markdown

@@ -70,17 +70,40 @@ The integration setup will next give you instructions to enter the [Application
 ## Troubleshooting
 
 If you have an error with your credentials you can delete them in the [Application Credentials](/integrations/application_credentials/) user interface.
+The below services will only work with the Sheets document created at setup by default. If you wish to append to or edit other documents, configure it for read/write access from the integrations page.
 
 ### Service `google_sheets.append_sheet`
 
-You can use the service `google_sheets.append_sheet` to add a row of data to the Sheets document created at setup.
+You can use the service `google_sheets.append_sheet` to add a row of data to a Sheets document.
 
 {% details "Create Event Service details" %}
 
 | Service data attribute | Optional | Description | Example |
 | ---------------------- | -------- | ----------- | --------|
-| `config_entry` | no | Config entry to use.
+| `config_entry` | no | Config entry to use. | [See selectors here](/docs/blueprint/selectors/#config-entry-selector)
+| `document_id` | yes | The id of the document. Defaults to the one created at setup. See below.
 | `worksheet` | yes | Name of the worksheet. Defaults to the first one in the document. | Sheet1
-| `data` | no | Data to be appended to the worksheet. This puts the data on a new row, one value per column. | ["foo"]
+| `data` | no | Data to be appended to the worksheet. This puts the data on a new row, one value per column. | {"foo": "bar"} [See templating here](/integrations/template)
 
 {% enddetails %}
+
+### Service `google_sheets.edit_sheet`
+
+You can use the service `google_sheets.edit_sheet` to edit cells of a Sheets document.
+
+{% details "Create Event Service details" %}
+
+| Service data attribute | Optional | Description | Example |
+| ---------------------- | -------- | ----------- | --------|
+| `config_entry` | no | Config entry to use. | [See selectors here](/docs/blueprint/selectors/#config-entry-selector)
+| `document_id` | yes | The id of the document. Defaults to the one created at setup. See below.
+| `worksheet` | yes | Name of the worksheet. Defaults to the first one in the document. | Sheet1
+| `data` | no | Data to be appended to the worksheet. This puts the data on a new row, one value per column. | {"A1": "bar} [See templating here](/integrations/template)
+
+{% enddetails %}
+
+## Where to find your document id
+
+<p class='img'>
+  <img src='/images/screenshots/google_sheets_document_id.png' />
+</p>