add pod unit

Signed-off-by: odubajDT <[email protected]>

Author: odubajDT

docs/system/k8s-metrics.md

@@ -333,7 +333,7 @@ This metric is [recommended][MetricRecommended].
 
 | Name     | Instrument Type | Unit (UCUM) | Description    | Stability | Entity Associations |
 | -------- | --------------- | ----------- | -------------- | --------- | ------ |
-| `k8s.node.allocatable_pods` | Gauge | `` | Amount of pods allocatable on the node | ![Development](https://img.shields.io/badge/-development-blue) |  |
+| `k8s.node.allocatable_pods` | Gauge | `{pod}` | Amount of pods allocatable on the node | ![Development](https://img.shields.io/badge/-development-blue) |  |
 
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 <!-- prettier-ignore-end -->

model/k8s/metrics.yaml

@@ -101,7 +101,7 @@ groups:
     stability: development
     brief: "Amount of pods allocatable on the node"
     instrument: gauge
-    unit: ""
+    unit: "{pod}"
   # k8s.node.cpu.* metrics
   - id: metric.k8s.node.cpu.time
     type: metric