rename the indexes to match the collection or index name; updated readme

Author: Jibola

README.md

@@ -65,7 +65,7 @@ You can pre-populate a test's local Atlas deployment before running the `run.sh`
 
 - `critical_search.json` with `DATABASE: app` will upload all of its contents to `app.critical_search` collection.
 
-To create a search index, provide the search index configuration in the `indexes` dir; the file needs to be a json and for each individual index you wish to create, you must make a separate json file; for easier readability, please name each index configuration after the collection the index will be defined on. If multiple indexes will be defined one collection, append a name "purpose" (test_collection_vectorsearch_index) to favor readability. The evergreen script will then create the search index before the `run.sh` script is executed. See the ["Create an Atlas Search Index and Run a Query"](https://www.mongodb.com/docs/atlas/cli/stable/atlas-cli-deploy-fts/#create-an-atlas-search-index-and-run-a-query) documentation instructions on how to create a search index using Atlas CLI.
+To create a search index, provide the search index configuration in the `indexes` dir; the file needs to be a json and for each individual index you wish to create, you must make a separate json file; for easier readability, please name each index configuration after the collection the index will be defined on or the name of the index itself. If multiple indexes will define one collection or multiples collections within a database share the name index name, append a name "purpose" (test_collection_vectorsearch_index) to favor readability. The evergreen script will then create the search index before the `run.sh` script is executed. See the ["Create an Atlas Search Index and Run a Query"](https://www.mongodb.com/docs/atlas/cli/stable/atlas-cli-deploy-fts/#create-an-atlas-search-index-and-run-a-query) documentation instructions on how to create a search index using Atlas CLI.
 
 If you need more customized behavior when populating your database or configuring your local Atlas deployment, include that behavior in your `run.sh` script. The path to the `$atlas` binary is provided to that script. You can view more ways to configure local Atlas by visiting the [Atlas CLI local deployments documentation](https://www.mongodb.com/docs/atlas/cli/stable/atlas-cli-local-cloud/).