Add serial port ds and region ssl cert to sidebar (#3268) (#1867)

* Add serial port ds and region ssl cert to sidebar

* Link to correct ds file

Signed-off-by: Modular Magician <[email protected]>

Author: modular-magician

.changelog/3268.txt

@@ -0,0 +1,3 @@
+```release-note:none
+
+```

website/google.erb

@@ -78,6 +78,9 @@
       <li<%= sidebar_current("docs-google-datasource-compute-instance-group") %>>
       <a href="/docs/providers/google/d/google_compute_instance_group.html">google_compute_instance_group</a>
       </li>
+      <li<%= sidebar_current("docs-google-datasource-compute-instance-serial-port") %>>
+      <a href="/docs/providers/google/d/datasource_compute_instance_serial_port.html">google_compute_instance_serial_port</a>
+      </li>
       <li<%= sidebar_current("docs-google-datasource-compute-lb-ip-ranges") %>>
       <a href="/docs/providers/google/d/datasource_compute_lb_ip_ranges.html">google_compute_lb_ip_ranges</a>
       </li>