Add missing documentation

docs/values.md

@@ -23,6 +23,8 @@ This file contains the markdown version of the default values that this chart ta
 | metrics.fluentbit.enabled | bool | `true` | if true fluentbit will be installed |
 | metrics.fluentbit.diskMaxCache | string | `5G` | max size for in-disk storage for fluent-bit |
 | metrics.fluentbit.nodeSelector | hash | `"nil"` | fluentbit statefulset node selectors |
+| metrics.fluentbit.extraVolumeMounts | list | `[]` |  |
+| metrics.fluentbit.extraVolumes | list | `[]` |  |
 | metrics.fluentbit.filters | string | `"nil"` | fluentbit filters as a yaml list in a multiline string |
 | metrics.fluentbit.inputs | string | Configuration to scrape local prometheus. See `values.yaml`. | fluentbit inputs as a yaml list in a multiline string |
 | metrics.fluentbit.matchQuery | string | `"match[]={job!=\"\"}"` | Query parameter to apply to the federate Prometheus URL, use this to filter and send only specific metrics |