Update wto-message-on-startup.md

[balhar-jakub]

Describe your pull request here:

Reflect changes from DKelosky

• Issue with docs.zowe.org/stable/user-guide/api-mediation/wto-message-on-startup/ #4131
• Issue with docs.zowe.org/stable/user-guide/api-mediation/wto-message-on-startup/ #4143
• Issue with docs.zowe.org/stable/user-guide/api-mediation/wto-message-on-startup/ #4130

List the file(s) included in this PR:
wto-message-on-startup.md

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[github-actions]

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[janan07]

Language refactor