[MINOR][TESTS] Fix comments on runIfTestsEnabled methods

[dongjoon-hyun]

What changes were proposed in this pull request?

This PR aims to fix comments on runIfTestsEnabled methods.

Why are the changes needed?

Apache Spark repository has two runIfTestsEnabled methods whose comments are wrong or ambiguous.

$ git grep -C1 'def runIfTestsEnabled'
connector/docker-integration-tests/src/test/scala/org/apache/spark/sql/jdbc/DockerIntegrationFunSuite.scala-  /** Run the give body of code only if Kinesis tests are enabled */
connector/docker-integration-tests/src/test/scala/org/apache/spark/sql/jdbc/DockerIntegrationFunSuite.scala:  def runIfTestsEnabled(message: String)(body: => Unit): Unit = {
connector/docker-integration-tests/src/test/scala/org/apache/spark/sql/jdbc/DockerIntegrationFunSuite.scala-    if (shouldRunTests) {
--
connector/kinesis-asl/src/test/scala/org/apache/spark/streaming/kinesis/KinesisFunSuite.scala-  /** Run the give body of code only if Kinesis tests are enabled */
connector/kinesis-asl/src/test/scala/org/apache/spark/streaming/kinesis/KinesisFunSuite.scala:  def runIfTestsEnabled(message: String)(body: => Unit): Unit = {
connector/kinesis-asl/src/test/scala/org/apache/spark/streaming/kinesis/KinesisFunSuite.scala-    if (shouldRunTests) {

Does this PR introduce any user-facing change?

No, this is a comment revision.

How was this patch tested?

Manual review.

Was this patch authored or co-authored using generative AI tooling?

No.

[dongjoon-hyun]

This is not Kinesis test.

[dongjoon-hyun]

Fix typo and make it explicit by mentioning the env variable name.

[dongjoon-hyun]

Could you review this a minor comment fix, @yaooqinn ?

[LuciferYang]

Merged into master. Thanks @dongjoon-hyun

[yaooqinn]

Late LGTM

[dongjoon-hyun]

Thank you, @LuciferYang and @yaooqinn !