Clarify environment variable requirements in README

Updated environment variable section for clarity and removed redundancy.

Author: lardo-de-arnaud

README.md

@@ -37,14 +37,19 @@ npx playwright install
 This library does not pin a Node.js or Playwright version. Use versions appropriate for your project.
 Any recent Playwright Test 1.x release should work; align with what you already use.
 
-### Environment variables
-Set the following (locally via .env, or in CI via your provider's secrets/variables):
 
-- `CANVAS_HOST`
-- `OAUTH_TOKEN`
-- `DEPLOYMENT_TEST_PATH`
 
-`CANVAS_HOST` should include protocol, domain and port (no trailing slash). 
+
+
+## Write The Tests 
+
+The following must be set (locally via .env, or in CI via your provider's secrets/variables):
+ * `CANVAS_HOST` - trailing slash is optional
+ * `OAUTH_TOKEN`
+ * `DEPLOYMENT_TEST_PATH` - leading slash is optional (Previously named `URL` which was changed as it was found to be confusing.)
+Use the utilities from this repository when writing your deployment tests.
+
+If any are missing, `assertVariables.js` will fail fast to help you diagnose configuration.
 
 Example:
 
@@ -54,15 +59,7 @@ OAUTH_TOKEN=12345~QWERTYUIOPASDFGHJKLZXCVBNM
 DEPLOYMENT_TEST_PATH=/accounts/1/external_tools/789
 ```
 
-If any are missing, `assertVariables.js` will fail fast to help you diagnose configuration.
-
-## Write The Tests 
-
-The following must be set (locally or in CI):
- * `CANVAS_HOST` - trailing slash is optional
- * `OAUTH_TOKEN`
- * `DEPLOYMENT_TEST_PATH` - leading slash is optional (Previously named `URL` which was changed as it was found to be confusing.)
-Use the utilities from this repository when writing your deployment tests.  Here's a simple example which asserts that some specific text, `XXXXXXXXXXXXXXX`, appears on a page. The test(s) can be as simple or as complex as seems appropriate.
+Here's a simple example which asserts that some specific text, `XXXXXXXXXXXXXXX`, appears on a page. The test(s) can be as simple or as complex as seems appropriate.
 
 ```js
 import { test, expect } from '@playwright/test'