Fixed some minor typos.

Author: angelomelonas

README.md

@@ -9,15 +9,15 @@ It's a project that allows you to access bunq's public API using [Postman](https
    not use any of Postman's cloud features.
 3. Click `Import` button in top left and drag all the files from the project there
 4. In top right corner select your environment (sandbox or production).
-5. If you selected sandbox, run `Create a sandbox user` request. It will automatically save you API key to the 
+5. If you selected sandbox, run `Create a sandbox user` request. It will automatically save your API key to the 
    environment.
 6. If you selected production, edit the environment using the "eye" icon. Set "current value" of `api_key` to your API 
    key.
 7. Run `Create an installation`, `Add the device`, `Add a session` in that order. They will create everything needed for
    using public API, including RSA keys, session and installation tokens. For you reference all those values will be set
    in the environment.
 8. Run `GET - List monetary accounts` to check that everything is working properly. If it does, you can modify that request to
-   do whatever you wanted to do and "Save as" for you future use.
+   do whatever you wanted to do and "Save as" for your future use.
 
 ### How does it work?