README fixes

chat/client-libraries/cloud/README.md

@@ -1,6 +1,6 @@
 # Google Chat API - Cloud Client library samples
 
-## Setup
+## Set up
 
 1. Add `service_account.json` and/or `client_secrets.json` to the current
    folder depending on the credentials used by the samples to run:
@@ -11,11 +11,11 @@
    1. `client_secrets.json` for
       [user credentials](https://developers.google.com/workspace/chat/authenticate-authorize-chat-user)
 
-1. Execute `npm install`
+1. Execute `pip install -r requirements.txt`
 
 ## Run
 
 Execute `python replace-with-the-sample-file.py` wih the sample file path of the sample.
 
-For example, to run the sample `create-message-app-cred`, your should run
+For example, to run the sample `create-message-app-cred`, you should run
 `python create-message-app-cred.py`.