Update documentation text

First time doing this; I just updated the grammatically issues I found with the README.md; Let me know if there are any issues with what I did. Thank you!

README.md

@@ -412,7 +412,7 @@ except anthropic.APIStatusError as e:
     print(e.response)
 ```
 
-Error codes are as followed:
+Error codes are as follows:
 
 | Status Code | Error Type                 |
 | ----------- | -------------------------- |
@@ -579,7 +579,7 @@ message = response.parse()  # get the object that `messages.create()` would have
 print(message.content)
 ```
 
-These methods return an [`LegacyAPIResponse`](https://github.com/anthropics/anthropic-sdk-python/tree/main/src/anthropic/_legacy_response.py) object. This is a legacy class as we're changing it slightly in the next major version.
+These methods return a [`LegacyAPIResponse`](https://github.com/anthropics/anthropic-sdk-python/tree/main/src/anthropic/_legacy_response.py) object. This is a legacy class as we're changing it slightly in the next major version.
 
 For the sync client this will mostly be the same with the exception
 of `content` & `text` will be methods instead of properties. In the