helm: update docs

Author: jkralik

charts/plgd-hub/README.md

@@ -558,5 +558,5 @@ global:
 | resourcedirectory.tolerations | object | `{}` | Toleration definition |
 
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-Autogenerated from chart metadata using [helm-docs v1.8.1](https://github.com/norwoodj/helm-docs/releases/v1.8.1)
+Autogenerated from chart metadata using [helm-docs v1.6.0](https://github.com/norwoodj/helm-docs/releases/v1.6.0)