OKTA-903113 - Minor updates to rate limit docs

[brianduffield-okta]

Description:

• What's changed? Added an asterisk to two documented endpoints to address customer complaint; added further note on endpoints that use an asterisk.
• Is this PR related to a Monolith release? n/a

Resolves:

• OKTA-903113

[acrolinxdevdocs-okta]

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Article	Total score Required:80	Word and phrases (Brand, terms) Preferred: 80	Correctness (Spelling, grammar) Preferred: 80	Clarity (Readability) Preferred: 80	Inclusive language (+ accesibility) Preferred: 80
✅ packages/@okta/vuepress-site/docs/reference/rl-global-enduser/index.md	84	22	100	100	93
✅ packages/@okta/vuepress-site/docs/reference/rl-global-mgmt/index.md	93	83	83	100	90

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[eng-info-dev-github-bot]

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