fix some typos (#5007)

* Update ingress.md

fix typo

* Update source-ip.md

docs/tasks/administer-federation/ingress.md

@@ -293,7 +293,7 @@ Check that:
     [the GLBC docs](https://github.com/kubernetes/ingress/blob/7dcb4ae17d5def23d3e9c878f3146ac6df61b09d/controllers/gce/README.md)
     for further information. To remedy this,
     delete any ingresses created before the cluster joined the
-    federation (and had it's GLBC reconfigured), and recreate them if
+    federation (and had its GLBC reconfigured), and recreate them if
     necessary.
 {% endcapture %}
 

docs/tutorials/services/source-ip.md

@@ -311,7 +311,7 @@ protocol between the loadbalancer and backend to communicate the true client IP
 such as the HTTP [X-FORWARDED-FOR](https://en.wikipedia.org/wiki/X-Forwarded-For)
 header, or the [proxy protocol](http://www.haproxy.org/download/1.5/doc/proxy-protocol.txt).
 Loadbalancers in the second category can leverage the feature described above
-by simply creating a HTTP health check pointing at the port stored in
+by simply creating an HTTP health check pointing at the port stored in
 the `service.spec.healthCheckNodePort` field on the Service.
 
 {% endcapture %}