fix(gradle): fix gradle command referenced in docs

[david-leifker]

Fixes mae/mce docs when run independently by gradle & fixes exception.

./gradlew :metadata-jobs:mae-consumer-job:bootRun

Command referenced here: https://datahubproject.io/docs/metadata-jobs/mae-consumer-job/

ERROR:

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APPLICATION FAILED TO START
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Description:

Parameter 1 of constructor in com.linkedin.metadata.boot.kafka.DataHubUpgradeKafkaListener required a bean of type 'org.springframework.kafka.core.DefaultKafkaConsumerFactory' that could not be found.


Action:

Consider defining a bean of type 'org.springframework.kafka.core.DefaultKafkaConsumerFactory' in your configuration.

Checklist

• The PR conforms to DataHub's Contributing Guideline (particularly Commit Message Format)
• Links to related issues (if applicable)
• Tests for the changes have been added/updated (if applicable)
• Docs related to the changes have been added/updated (if applicable). If a new feature has been added a Usage Guide has been added for the same.
• For any breaking change/potential downtime/deprecation/big changes an entry has been made in Updating DataHub

[jjoyce0510]

What were the implications of NOT having these?

[david-leifker]

Exception when not enabling consumers.