docs: improve grammar in README (and/APIs)

Author: Your Name

README.md

@@ -29,7 +29,7 @@
 
 HTTPie (pronounced _aitch-tee-tee-pie_) is a command-line HTTP client.
 Its goal is to make CLI interaction with web services as human-friendly as possible.
-HTTPie is designed for testing, debugging, and generally interacting with APIs & HTTP servers.
+HTTPie is designed for testing, debugging, and interacting with APIs and HTTP servers.
 The `http` & `https` commands allow for creating and sending arbitrary HTTP requests.
 They use simple and natural syntax and provide formatted and colorized output.