Fix typos in Grafana dashboards

Author: priteau

etc/kayobe/kolla/config/grafana/dashboards/ceph/ceph_overview.json

@@ -1000,7 +1000,7 @@
         }
       ],
       "thresholds": "250,300",
-      "title": "Agerage PGs per OSD",
+      "title": "Average PGs per OSD",
       "type": "singlestat",
       "valueFontSize": "80%",
       "valueMaps": [

etc/kayobe/kolla/config/grafana/dashboards/openstack/node_exporter_full.json

@@ -11417,7 +11417,7 @@
           "format": "time_series",
           "interval": "",
           "intervalFactor": 2,
-          "legendFormat": "TCP_tw - Sockets wating close",
+          "legendFormat": "TCP_tw - Sockets waiting close",
           "refId": "E",
           "step": 240
         }

etc/kayobe/kolla/config/grafana/dashboards/openstack/redfish.json

@@ -2407,7 +2407,7 @@
       ],
       "timeFrom": null,
       "timeShift": null,
-      "title": "Power comsumption",
+      "title": "Power consumption",
       "type": "gauge"
     },
     {
@@ -3774,7 +3774,7 @@
       "timeFrom": null,
       "timeRegions": [],
       "timeShift": null,
-      "title": "Power comsumption",
+      "title": "Power consumption",
       "tooltip": {
         "shared": true,
         "sort": 0,