fix wrong semantic

zhongwuzw · kzaher · commit e782081d37a4 · 2017-07-20T09:56:20.000+02:00
diff --git a/RxSwift/ObservableConvertibleType.swift b/RxSwift/ObservableConvertibleType.swift
@@ -6,7 +6,7 @@
 //  Copyright © 2015 Krunoslav Zaher. All rights reserved.
 //
 
-/// Type that can be converted to observable sequence (`Observer<E>`).
+/// Type that can be converted to observable sequence (`Observable<E>`).
 public protocol ObservableConvertibleType {
     /// Type of elements in sequence.
     associatedtype E
