SLO burn rate indicator

[estherk15]

What does this PR do? What is the motivation?

• Add burn rate indicator information
• Clean up white space

Merge instructions

Merge readiness:

• Ready for merge

[github-actions]

Preview links (active after the build_preview check completes)

Modified Files

• https://docs-staging.datadoghq.com/rifa/slo-burn-rate-indicator/service_management/service_level_objectives/

[cswatt]

looks good! I mainly just have one comment + some suggested expanded alt text

[cswatt]

Suggested change

	Burn rate indicators identify SLOs that are consuming their error budget faster than their configured target permits within the rolling 2-hour evaluation window. They appear next to the applicable SLO names on the [SLO manage page][2].
	Burn rate indicators identify SLOs that are consuming their error budget faster than their configured target permits within the rolling 2-hour evaluation window. Burn rate indicators appear next to the applicable SLO names on the [SLO manage page][2].

• Question on first sentence, because I see two different ways to interpret it:
  • Burn rate indicators use a rolling 2-hour evaluation window to evaluate which SLOs are having too many errors too quickly
  • SLOs permit a certain number of errors within a rolling 2-hour evaluation window, and burn rate indicators identify the ones that are having too many errors too quickly

tldr it's ambiguous what the within the rolling 2-hour evaluation window clause is referring to. I believe it should be the first interpretation, in which case maybe reword to Burn rate indicators identify (within a rolling 2-hour evaluation window) SLOs that are consuming their error budget faster than their configured target permits.? Inelegant suggestion here, I'll leave the rewording up to you.

[cswatt]

Suggested change

	{{< img src="/service_management/service_level_objectives/slo_burn_rate_indicator.png" alt="SLO burn rate indicator example" style="width:80%;" >}}
	{{< img src="/service_management/service_level_objectives/slo_burn_rate_indicator.png" alt="The SLO manage page in Datadog. A red icon appears next to the name of an SLO in the list. Mousing over the red icon displays a modal with further information, a burn rate visualization, and a link to the SLO's corresponding service page." style="width:80%;" >}}