Utils: Improve print function for SmallStringVector

Change-Id: I9dc66ddddf380d8e2af057719005f4d14a592396
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>

src/libs/utils/smallstringio.h

@@ -144,7 +144,7 @@ QDebug operator<<(QDebug debug, const SmallStringVector &stringVector)
 inline
 void PrintTo(const SmallStringVector &textVector, ::std::ostream* os)
 {
-    *os << "StringVector(" << textVector.join(Utils::SmallString(", ")).constData() << ")";
+    *os << "[" << textVector.join(Utils::SmallString(", ")).constData() << "]";
 }
 
 } // namespace Utils