[ios] Changed statistics tags representation.

iphone/Maps/UI/PlacePage/MWMPlacePageData.h

@@ -120,7 +120,7 @@ enum class OpeningHours
 - (m2::PointD const &)mercator;
 - (ms::LatLon)latLon;
 
-- (NSArray<NSString *> *)statisticsTags;
+- (NSString *)statisticsTags;
 
 // TODO(Vlad): Use MWMSettings to store coordinate format.
 + (void)toggleCoordinateSystem;

iphone/Maps/UI/PlacePage/MWMPlacePageData.mm

@@ -386,12 +386,12 @@ using namespace place_page;
 
 #pragma mark - Stats
 
-- (NSArray<NSString *> *)statisticsTags
+- (NSString *)statisticsTags
 {
   NSMutableArray<NSString *> * result = [@[] mutableCopy];
   for (auto const & s : m_info.GetRawTypes())
     [result addObject:@(s.c_str())];
-  return result.copy;
+  return [result componentsJoinedByString:@", "];
 }
 
 @end