Minor improvements to the docs for voice config and testing (#3407)

CONTRIBUTING.md

@@ -99,15 +99,22 @@ https://github.com/Significant-Gravitas/Auto-GPT/pulls?q=is%3Apr+is%3Aopen+-labe
 ## Testing your changes
 
 If you add or change code, make sure the updated code is covered by tests.
-
-To increase coverage if necessary, [write tests using `pytest`].
+To increase coverage if necessary, [write tests using pytest].
 
 For more info on running tests, please refer to ["Running tests"](https://significant-gravitas.github.io/Auto-GPT/testing/).
 
-[write tests using `pytest`]: https://realpython.com/pytest-python-testing/
+[write tests using pytest]: https://realpython.com/pytest-python-testing/
+
+### API-dependent tests
+
+To run tests that involve making calls to the OpenAI API, we use VCRpy. It caches known
+requests and matching responses in so-called *cassettes*, allowing us to run the tests
+in CI without needing actual API access.
+
+When changes cause a test prompt to be generated differently, it will likely miss the
+cache and make a request to the API, updating the cassette with the new request+response.
+*Be sure to include the updated cassette in your PR!*
 
- 
-In Pytest, we use VCRpy. It's a package that allows us to save OpenAI and other API providers' responses.
 When you run Pytest locally:
 
 - If no prompt change: you will not consume API tokens because there are no new OpenAI calls required.

docs/configuration/voice.md

@@ -11,8 +11,8 @@ premade voices that Auto-GPT can use for speech.
 
 1. Go to [ElevenLabs](https://beta.elevenlabs.io/) and make an account if you don't
     already have one.
-2. Choose and setup the `Starter` plan.
-3. Click the top right icon and find "Profile" to locate your API Key.
+2. Choose and setup the *Starter* plan.
+3. Click the top right icon and find *Profile* to locate your API Key.
 
 In the `.env` file set:
 

docs/setup.md

@@ -73,7 +73,7 @@ Get your OpenAI API key from: [https://platform.openai.com/account/api-keys](htt
 !!! important
     Make sure you have [Git](https://git-scm.com/downloads) installed for your OS.
 
-!!! info
+!!! info "Executing commands"
     To execute the given commands, open a CMD, Bash, or Powershell window.  
     On Windows: press ++win+x++ and pick *Terminal*, or ++win+r++ and enter `cmd`
 
@@ -115,9 +115,6 @@ Get your OpenAI API key from: [https://platform.openai.com/account/api-keys](htt
 
 7. Save and close the `.env` file.
 
-!!! info
-    Get your ElevenLabs API key from: [ElevenLabs](https://elevenlabs.io). You can view your xi-api-key using the "Profile" tab on the website.
-
 !!! info "Using a GPT Azure-instance"
     If you want to use GPT on an Azure instance, set `USE_AZURE` to `True` and
     make an Azure configuration file: