Update gitlab/valet-custom-transformers-lab.md

Co-authored-by: Begona Guereca <begonaguereca@github.com>

gitlab/valet-custom-transformers-lab.md

@@ -42,7 +42,7 @@ jobs:
     - run: terraform show --json $PLAN | convert_report > $PLAN_JSON
 #     # 'artifacts.terraform' was not transformed because there is no suitable equivalent in GitHub Actions
 ```
-- We can see from the last line that `artifacts.terraform` was not transformed.  In order for us to write a custom transformer for this we need to know the identifier. In general this will be the value between the back ticks, which in this case is `artifacts.terraform`.  This is how our custom transformer will target the correct step.
+- We can see from the last line that `artifacts.terraform` was not transformed.  In order for us to write a custom transformer for this we need to know the identifier. In general, the identifier will be the value between the backticks, which in this case is `artifacts.terraform`.  This is how our custom transformer will target the correct step.
 - The custom transformers file can have any name, but it is recommend that you use a `.rb` extension so the codespaces editor knows it is a ruby file and can provide syntax highlighting.
 - we have chosen the `actions/upload-artifacts` as our replacement so we should look at the [docs](https://github.com/marketplace/actions/upload-a-build-artifact) to determine the correct final yaml
   ```yaml