Remove extra ;

Removes a extra ; that breaks build with gcc and `-Werror=pedantic`.

include/indicators/details/stream_helper.hpp

@@ -67,7 +67,7 @@ inline std::ostream &write_duration(std::ostream &os, std::chrono::nanoseconds n
     os << setw(2) << m.count() << "m:" << setw(2) << s.count() << 's';
     os.fill(fill);
     return os;
-};
+}
 
 class BlockProgressScaleWriter
 {
@@ -136,4 +136,4 @@ private:
 };
 
 }
-}
+}