fix: Fix Slack Notification Step

[jigisha620]

Fixes #N/A

Description
Fix syntax error in slack notification step

How was this change tested?
/karpenter snapshot

Does this change impact docs?

• Yes, PR includes docs updates
• Yes, issue opened: #
• No

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[netlify]

✅ Deploy Preview for karpenter-docs-prod canceled.

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🔨 Latest commit	7bb4ddb
🔍 Latest deploy log	https://app.netlify.com/sites/karpenter-docs-prod/deploys/660c5a96cdcd030008355f0c

[jigisha620]

/karpenter snapshot

[coveralls]

Pull Request Test Coverage Report for Build 8528276613

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 82.197%

---

Totals
Change from base Build 8526723247:	0.0%
Covered Lines:	5328
Relevant Lines:	6482

---

💛 - Coveralls

[github-actions]

Snapshot successfully published to oci://021119463062.dkr.ecr.us-east-1.amazonaws.com/karpenter/snapshot/karpenter:0-7bb4ddb336e7429343814694d5b8ea0ac10f6ac8.
To install you must login to the ECR repo with an AWS account:

aws ecr get-login-password --region us-east-1 | docker login --username AWS --password-stdin 021119463062.dkr.ecr.us-east-1.amazonaws.com

helm upgrade --install karpenter oci://021119463062.dkr.ecr.us-east-1.amazonaws.com/karpenter/snapshot/karpenter --version "0-7bb4ddb336e7429343814694d5b8ea0ac10f6ac8" --namespace "kube-system" --create-namespace \
  --set "settings.clusterName=${CLUSTER_NAME}" \
  --set "settings.interruptionQueue=${CLUSTER_NAME}" \
  --set controller.resources.requests.cpu=1 \
  --set controller.resources.requests.memory=1Gi \
  --set controller.resources.limits.cpu=1 \
  --set controller.resources.limits.memory=1Gi \
  --wait

[engedaam]

LGTM 🚀