Fix link to Charge Level dashboard (#3263)

* Fix link to Charge Level dashboard (DrM: not sure, whether that makes it through)

I noticed this link that should probably go to the charge level dashboard.

Also, semi-related, is there a reason all the uid's are random numbers? These are the uid's that appear in the URL of the dasboard. I changed them on my instance to more readable uid's, is this something that would be approved if I changed all the uid's of the dashboards, and fix all the links? The only breaking change I can foresee is bookmarked dashboards become invalid.

* Change wording from "median" to "average" since the mean is calculated

Median is a different calculation than average/mean. I don't think Grafana even supports calculating the median.

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Co-authored-by: DrMichael <DrMichael@users.noreply.github.com>

grafana/dashboards/drive-stats.json

@@ -485,7 +485,7 @@
       ],
       "timeFrom": null,
       "timeShift": null,
-      "title": "Median distance of a drive",
+      "title": "Average distance of a drive",
       "type": "stat"
     },
     {
@@ -603,7 +603,7 @@
       ],
       "timeFrom": null,
       "timeShift": null,
-      "title": "Median distance driven per day",
+      "title": "Average distance driven per day",
       "type": "stat"
     },
     {
@@ -696,7 +696,7 @@
       ],
       "timeFrom": null,
       "timeShift": null,
-      "title": "Median kWh used per day",
+      "title": "Average kWh used per day",
       "type": "stat"
     },
     {

grafana/dashboards/overview.json

@@ -367,8 +367,8 @@
       "links": [
         {
           "targetBlank": true,
-          "title": "Drive details",
-          "url": "/d/zm7wN6Zgz/drive-details"
+          "title": "Charge Level",
+          "url": "/d/WopVO_mgz"
         }
       ],
       "options": {