correct .environment sample code for opensearch, gotenberg, influxdb services

[gilzow]

Where on docs.platform.sh should be changed?

https://docs.platform.sh/add-services/opensearch.html#use-in-app
https://docs.platform.sh/add-services/influxdb.html#use-in-app
https://docs.platform.sh/add-services/gotenberg.html#relationship-reference (PLATFORM_RELATIONSHIPS environment variable tab)
https://docs.upsun.com/add-services/opensearch.html#use-in-app
https://docs.upsun.com/add-services/influxdb.html#use-in-app
https://docs.upsun.com/add-services/gotenberg.html#relationship-reference (PLATFORM_RELATIONSHIPS environment variable tab)

What exactly should be updated?

export RELATIONSHIPS_JSON=$(echo $PLATFORM_RELATIONSHIPS | base64 --decode)
should be
export RELATIONSHIPS_JSON="$(echo $PLATFORM_RELATIONSHIPS | base64 --decode)"

Additional context

The former will not parse correctly in dash since the decoded contents in PLATFORM_RELATIONSHIPS contain "s