README - typo in CAI_STREAM variable name (#381)

Fix typo in CAI_STREAM variable name

Author: blakkd

README.md

@@ -524,7 +524,7 @@ If you are using alias1 model, make sure that CAI is >0.4.0 version and here you
 OPENAI_API_KEY="sk-1234"
 OLLAMA=""
 ALIAS_API_KEY="<sk-your-key>"  # note, add yours
-CAI_STEAM=False
+CAI_STREAM=False
 CAI_MODEL="alias1"
 ```