github newrelic/docs-website release-12.20.2021-15.00

🚀 What's new?

@hollorandan - Add files via upload ->
@hollorandan - service-level-management(whats-new): public beta release ->
@khickey-newrelic - feat:Observability maturity doc template ->
@khickey-newrelic - Merge branch 'newrelic:develop' into observability-maturity-enhancements ->
@paperclypse - fix(OMA): Improved styling and word choice, fixed typos ->
@khickey-newrelic - Merge branch 'newrelic:develop' into observability-maturity-enhancements ->
@roadlittledawn - feat: remove default for more help section ->
@brnhensley - docs: add language identifiers to codeblocks ->
@zuluecho9 - fix(what's-new): slight style edits ->
@zuluecho9 - fix(whats-new): some slight style edits ->
@zuluecho9 - fix(whats-new): editing summary - too long error ->
@zuluecho9 - fix(what's-new): removing space in front matter ->
@paperclypse - feat(alerts): New decision tree flowchart for aggregation methods ->
@zuluecho9 - Update src/content/whats-new/2021/12/whats-new-12-07-service-level-management-beta.md ->
@roadlittledawn - Merge pull request #5387 from newrelic/clang/decomm-fmh ->
@zuluecho9 - Merge pull request #5196 from hollorandan/whats-new-12-07-service-level-management-beta ->
@paperclypse - style(Alerts): tweaked the image with some style improvements ->
@zuluecho9 - Merge pull request #5389 from brnhensley/patch-7 ->
@paperclypse - style(alerts): Updated image based on SME feedback ->
@paperclypse - Merge pull request #5390 from newrelic/doc-7513-flowchart ->
@paperclypse - Merge pull request #5371 from khickey-newrelic/observability-maturity-enhancements ->
@nr-opensource-bot - chore(whats-new-ids): updated ids ->

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