Fix typo – "muti-author" to "multi-author" (#19897)

Author: mokagio

WordPress/Classes/Services/BlogService.m

@@ -180,7 +180,7 @@ - (void)syncBlogAndAllMetadata:(Blog *)blog completionHandler:(void (^)(void))co
         [self updateMultiAuthor:users forBlog:blogObjectID];
         dispatch_group_leave(syncGroup);
     } failure:^(NSError *error) {
-        DDLogError(@"Failed checking muti-author status for blog %@: %@", blog.url, error);
+        DDLogError(@"Failed checking multi-author status for blog %@: %@", blog.url, error);
         dispatch_group_leave(syncGroup);
     }];
 
@@ -273,7 +273,7 @@ - (void)syncAuthorsForBlog:(Blog *)blog
         [self updateMultiAuthor:users forBlog:blogObjectID];
         success();
     } failure:^(NSError *error) {
-        DDLogError(@"Failed checking muti-author status for blog %@: %@", blog.url, error);
+        DDLogError(@"Failed checking multi-author status for blog %@: %@", blog.url, error);
         failure(error);
     }];
 }