Fix timeseries example data structure

Author: npentrel

source/core/timeseries-collections.txt

@@ -165,51 +165,51 @@ multiple documents at once, issue the following command:
 .. code-block:: javescript
 
    db.weather.insertMany([{
-      "metadata": [{"sensorId": 5578}, {"type": "temperature"}],
+      "metadata": {"sensorId": 5578, "type": "temperature"},
       "timestamp": ISODate("2021-05-18T00:00:00.000Z"),
       "temp": 12
    }, {
-      "metadata": [{"sensorId": 5578}, {"type": "temperature"}],
+      "metadata": {"sensorId": 5578, "type": "temperature"},
       "timestamp": ISODate("2021-05-18T04:00:00.000Z"),
       "temp": 11
    }, {
-      "metadata": [{"sensorId": 5578}, {"type": "temperature"}],
+      "metadata": {"sensorId": 5578, "type": "temperature"},
       "timestamp": ISODate("2021-05-18T08:00:00.000Z"),
       "temp": 11
    }, {
-      "metadata": [{"sensorId": 5578}, {"type": "temperature"}],
+      "metadata": {"sensorId": 5578, "type": "temperature"},
       "timestamp": ISODate("2021-05-18T12:00:00.000Z"),
       "temp": 12
    }, {
-      "metadata": [{"sensorId": 5578}, {"type": "temperature"}],
+      "metadata": {"sensorId": 5578, "type": "temperature"},
       "timestamp": ISODate("2021-05-18T16:00:00.000Z"),
       "temp": 16
    }, {
-      "metadata": [{"sensorId": 5578}, {"type": "temperature"}],
+      "metadata": {"sensorId": 5578, "type": "temperature"},
       "timestamp": ISODate("2021-05-18T20:00:00.000Z"),
       "temp": 15
    }, {
-      "metadata": [{"sensorId": 5578}, {"type": "temperature"}],
+      "metadata": {"sensorId": 5578, "type": "temperature"},
       "timestamp": ISODate("2021-05-19T00:00:00.000Z"),
       "temp": 13
    }, {
-      "metadata": [{"sensorId": 5578}, {"type": "temperature"}],
+      "metadata": {"sensorId": 5578, "type": "temperature"},
       "timestamp": ISODate("2021-05-19T04:00:00.000Z"),
       "temp": 12
    }, {
-      "metadata": [{"sensorId": 5578}, {"type": "temperature"}],
+      "metadata": {"sensorId": 5578, "type": "temperature"},
       "timestamp": ISODate("2021-05-19T08:00:00.000Z"),
       "temp": 11
    }, {
-      "metadata": [{"sensorId": 5578}, {"type": "temperature"}],
+      "metadata": {"sensorId": 5578, "type": "temperature"},
       "timestamp": ISODate("2021-05-19T12:00:00.000Z"),
       "temp": 12
    }, {
-      "metadata": [{"sensorId": 5578}, {"type": "temperature"}],
+      "metadata": {"sensorId": 5578, "type": "temperature"},
       "timestamp": ISODate("2021-05-19T16:00:00.000Z"),
       "temp": 17
    }, {
-      "metadata": [{"sensorId": 5578}, {"type": "temperature"}],
+      "metadata": {"sensorId": 5578, "type": "temperature"},
       "timestamp": ISODate("2021-05-19T20:00:00.000Z"),
       "temp": 12
    }])

source/core/timeseries/timeseries-automatic-removal.txt

@@ -42,7 +42,7 @@ specified number of seconds. Consider the following document in the
 .. code-block::
 
    {
-      "metadata": [{"sensorId": 5578}, {"type": "temperature"}],
+      "metadata": {"sensorId": 5578, "type": "temperature"},
       "timestamp": ISODate("2021-05-18T10:00:00.000Z"),
       "temp": 12
    }