Fix testing documentation (opensearch-project#5289)

Signed-off-by: Sayali Gaikawad <gaiksaya@amazon.com>

Author: gaiksaya

docs/Testing-the-Distribution.md

@@ -21,20 +21,20 @@ Additional arguments:
 |------------------------|-------------------------------------------------------------------------|
 | test-type              | Run tests of a test suite. [integ-test, bwc-test, perf-test]            |
 | test-manifest-path     | Specify a test manifest path.                                           |
-| --paths                | Location of manifest(s).                                                |
+| --paths                | Specify paths for OpenSearch and OpenSearch Dashboards.                                                |
 | --test-run-id          | Unique identifier for a test run.                                       |
 | --component [name ...] | Test a subset of specific components.                                   |
 | --keep                 | Do not delete the temporary working directory on both success or error. |
 | -v, --verbose          | Show more verbose output.                                               |
 
 ### Integration Tests
-In order to run the tests in your local, you can avoid installing the packages with right version by using a docker image. Each test manifest consist of the docker image to run tests on. 
+In order to run the tests in your local, you can avoid installing the packages with right version by using a docker image. Each test manifest consist of the docker image to run tests on. Check the [test manifest](https://github.com/opensearch-project/opensearch-build/blob/main/manifests/2.19.0/opensearch-2.19.0.yml#L8) or [jenkins file](https://github.com/opensearch-project/opensearch-build/blob/main/jenkins/opensearch/integ-test.jenkinsfile#L15-L20) to retrieve the docker images.
 
 ```
   docker run -u root -it opensearchstaging/ci-runner:ci-runner-centos7-opensearch-build-v3 /bin/bash
 ```
 
-Set up the right JAVA_HOME version or node version as per the distribution version and clone this repository to start using testing framework.
+Set up the right JAVA_HOME version (check test manifest to see what version is being used to test the distribution) or node version as per the distribution version and clone this repository to start using testing framework.
 
 
 To run integration tests locally, use below command. This pulls down the built bundle and its manifest file, reads all components of the distribution, and runs integration tests against each component.
@@ -45,15 +45,15 @@ Usage:
 ./test.sh integ-test <test-manifest-path> <target>
 ```
 
-For example, build locally and run integration tests.
+For example, to build the distribution locally and run integration test on locally built distribution:
 
 ```bash
 ./build.sh manifests/1.3.5/opensearch-1.3.5.yml
 ./assemble.sh builds/opensearch/manifest.yml
 ./test.sh integ-test manifests/1.3.5/opensearch-1.3.5-test.yml . # looks for "./builds/opensearch/manifest.yml" and "./dist/opensearch/manifest.yml"
 ```
 
-Or run integration tests against an existing build.
+Or run integration tests against an existing build:
 
 ```bash
 ./test.sh integ-test manifests/1.3.5/opensearch-1.3.5-test.yml --paths opensearch=https://ci.opensearch.org/ci/dbc/distribution-build-opensearch/1.3.5/5960/linux/x64/tar # looks for https://.../builds/opensearch/manifest.yml and https://.../dist/opensearch/manifest.yml