Change number of shards and fix typo.

[dblock]

Signed-off-by: dblock dblock@dblock.org

Description

DCOed #4980.

Confirmed that this can be reproduced and that the change fixes the issue.

./gradlew ':server:test' --tests "org.opensearch.cluster.routing.OperationRoutingTests.testWeightedOperationRoutingWeightUndefinedForOneZone" -Dtests.seed=B1745FEE14F29C02 -Dtests.security.manager=true -Dtests.jvm.argline="-XX:TieredStopAtLevel=1 -XX:ReservedCodeCacheSize=64m" -Dtests.locale=ar-EG -Dtests.timezone=Asia/Magadan -Druntime.java=17

Issues Resolved

Closes #4881.

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[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: FAILURE ❌
• URL: https://build.ci.opensearch.org/job/gradle-check/6903/
• CommitID: 1db753a
  Please examine the workflow log, locate, and copy-paste the failure below, then iterate to green.
  Is the failure a flaky test unrelated to your change?

[dblock]

#4899
#5197

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: FAILURE ❌
• URL: https://build.ci.opensearch.org/job/gradle-check/6905/
• CommitID: 1db753a
  Please examine the workflow log, locate, and copy-paste the failure below, then iterate to green.
  Is the failure a flaky test unrelated to your change?