edits to custom transformers lab

Note: line 200 might include an error.

travis/5-custom-transformers.md

@@ -1,6 +1,6 @@
 # Using custom transformers to customize GitHub Actions Importer's behavior
 
-In this lab you will build upon the `dry-run` command to override GitHub Actions Importer's default behavior and customize the converted workflow using "custom transformers". Custom transformers can be used to:
+In this lab you will build upon the `dry-run` command to override GitHub Actions Importer's default behavior and customize the converted workflow using "custom transformers." Custom transformers can be used to:
 
 1. Convert items that are not automatically converted.
 2. Convert items that were automatically converted using different actions.
@@ -81,7 +81,7 @@ The converted workflow above contains an `codedeploy` step that was not automati
     - __codedeploy__
 
 2. What is the desired Actions syntax to use instead?
-    - After some research, you have determined that we can login to AWS with the `aws-actions/configure-aws-credentials@v1` action, and deploy the app to AWS using a run step to replace the functionality of `codedeploy`:
+    - After some research, you have determined that you can log in to AWS with the `aws-actions/configure-aws-credentials@v1` action, and deploy the app to AWS using a run step to replace the functionality of `codedeploy`:
 
       ```yaml
         - uses: aws-actions/configure-aws-credentials@v1
@@ -121,7 +121,7 @@ transform "codedeploy" do |_item|
 end
 ```
 
-This method can use any valid ruby syntax and should return a `Hash`, or an array of `Hashes` that represent the YAML that should be generated for a given step. GitHub Actions Importer will use this method to convert a step with the provided identifier and will use the `item` parameter for the original values configured in Travis CI.
+This method can use any valid Ruby syntax and should return a `Hash`, or an array of `Hashes` that represent the YAML that should be generated for a given step. GitHub Actions Importer will use this method to convert a step with the provided identifier and will use the `item` parameter for the original values configured in Travis CI.
 
 Now you can perform another `dry-run` command and use the `--custom-transformers` CLI option to provide this custom transformer. Run the following command within your codespace terminal:
 
@@ -153,7 +153,7 @@ The converted workflow that is generated by the above command will now use the c
 +      aws deploy create-deployment --application-name MyApp --deployment-group-name MyDeploymentGroup --github-location repository=$GITHUB_REPOSITORY,commitId=$commit_hash --ignore-application-stop-failures
 ```
 
-_Note_: We hard coded certain values such as the `application-name`, but we can apply these properties programmatically as well by using the item passed into the transform method. If you were unsure what the data structure of `item` was, you could use the following code in the custom transformer to print `item` to the console:
+_Note_: Certain values such as the `application-name` are hard-coded, but you can apply these properties programmatically as well by using the item passed into the transform method. If you were unsure what the data structure of `item` was, you could use the following code in the custom transformer to print `item` to the console:
 
 ```ruby
 transform "codecov_codecov_upload" do |item|
@@ -237,7 +237,7 @@ runner "linux", ["new-runner", "self-hosted"]
 
 </details>
 
-That's it! Congratulations, you have overridden GitHub Actions Importer's default behavior by customizing the conversion of:
+That's it. Congratulations, you have overridden GitHub Actions Importer's default behavior by customizing the conversion of:
 
 - Unknown steps
 - Environment variables