Update NB 4 docs 'GraphQL API' for Strawberry changes

[arthanson]

Change Type

Correction

Area

Integrations/API

Proposed Changes

The documentation for GraphQL filtering needs to be changed for Strawberry as the filtering query syntax has changed, for example:

{
  device_list {
    id
    name
    interfaces(enabled: true) {
      name
    }
  }
}

the interfaces(enabled: true) { will no longer work and needs to be changed to the new lookup syntax.