[MINOR][SQL] Change the script name for creating oracle docker image

### What changes were proposed in this pull request?

This PR changes the name in the comment in `jdbc.OracleIntegrationSuite` and `v2.OracleIntegrationSuite`.
The script is for creating oracle docker image.

### Why are the changes needed?

The name of the script is `buildContainerImage`, not `buildDockerImage` now.
- oracle/docker-images@d918f5a#diff-be303ab32e74192aca829e5ea259a0aec07aac23a6049120fb337ec4efa601b0

### Does this PR introduce _any_ user-facing change?

No.

### How was this patch tested?

I confirmed that I can build the image with `./buildContainerImage.sh -v 18.4.0 -x`.

Closes #32629 from sarutak/change-oracle-container-script-name.

Authored-by: Kousuke Saruta <sarutak@oss.nttdata.com>
Signed-off-by: Dongjoon Hyun <dhyun@apple.com>

external/docker-integration-tests/src/test/scala/org/apache/spark/sql/jdbc/OracleIntegrationSuite.scala

@@ -48,7 +48,7 @@ import org.apache.spark.tags.DockerTest
  *  $ git clone https://github.com/oracle/docker-images.git
  *  // Head SHA: 3e352a22618070595f823977a0fd1a3a8071a83c
  *  $ cd docker-images/OracleDatabase/SingleInstance/dockerfiles
- *  $ ./buildDockerImage.sh -v 18.4.0 -x
+ *  $ ./buildContainerImage.sh -v 18.4.0 -x
  *  $ export ORACLE_DOCKER_IMAGE_NAME=oracle/database:18.4.0-xe
  *  $ cd $SPARK_HOME
  *  $ ./build/sbt -Pdocker-integration-tests

external/docker-integration-tests/src/test/scala/org/apache/spark/sql/jdbc/v2/OracleIntegrationSuite.scala

@@ -43,7 +43,7 @@ import org.apache.spark.tags.DockerTest
  *  $ git clone https://github.com/oracle/docker-images.git
  *  // Head SHA: 3e352a22618070595f823977a0fd1a3a8071a83c
  *  $ cd docker-images/OracleDatabase/SingleInstance/dockerfiles
- *  $ ./buildDockerImage.sh -v 18.4.0 -x
+ *  $ ./buildContainerImage.sh -v 18.4.0 -x
  *  $ export ORACLE_DOCKER_IMAGE_NAME=oracle/database:18.4.0-xe
  *  $ cd $SPARK_HOME
  *  $ ./build/sbt -Pdocker-integration-tests