[enterprise-4.13] RHDEVDOCS-5415: fix formatting issue in Tekton Chains doc

[openshift-cherrypick-robot]

This is an automated cherry-pick of #61513

/assign gabriel-rh

[openshift-ci-robot]

@openshift-cherrypick-robot: Could not make automatic cherrypick of [Jira Issue RHDEVDOCS-5415](https://issues.redhat.com//browse/RHDEVDOCS-5415) for this PR as the target version is not set for this branch in the jira plugin config. Running refresh:
/jira refresh

In response to this:

This is an automated cherry-pick of #61513

/assign gabriel-rh

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[openshift-ci-robot]

@openshift-ci-robot: This pull request references RHDEVDOCS-5415 which is a valid jira issue.

In response to this:

@openshift-cherrypick-robot: Could not make automatic cherrypick of [Jira Issue RHDEVDOCS-5415](https://issues.redhat.com//browse/RHDEVDOCS-5415) for this PR as the target version is not set for this branch in the jira plugin config. Running refresh:
/jira refresh

In response to this:

This is an automated cherry-pick of #61513

/assign gabriel-rh

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[ocpdocs-previewbot]

🤖 Tue Feb 11 15:59:10 - Prow CI generated the docs preview:

https://61518--ocpdocs-pr.netlify.app/openshift-service-mesh/latest/migrating/ossm-migrating-read-me-assembly.html