docs(background-http): wording

Author: NathanWalker

Diff for: packages/background-http/README.md

@@ -157,7 +157,7 @@ Initializes an HTTP background service.
 import { session } from '@nativescript/background-http';
 session: Session = session(id: string)
 ```
-Gets or creates a background download/upload session by id.
+Gets or creates a background http session by id.
 
 ---
 #### Session Object
@@ -262,7 +262,7 @@ import { session } from '@nativescript/background-http';
 
 session: Session = session(id)
 ```
-Gets or creates a background download/upload session by id.
+Gets or creates a background http session by id.
 
 ---
 ### uploadFile()