Reader: Missing space between 'By' and 'author' for some languages.

[tiagomar]

For some languages there is no space between By and author when viewing a post, like pt-br, it, de, he, etc. This is not a comprehensive list, there might be other languages with the same problem.

Expected behavior

EN	FR

Actual behavior

PT-BR	IT	DE	HE

Steps to reproduce the behavior

1. Open a post.
2. Change the device language to any of the affected languages.

Tested on iPhone 13, iOS 15.5, WPiOS 20.3.0.0