Help/About: Remove an unwanted whitespace in a Theme Install screen help tab string.

Follow-up to [54252].

Props kebbet.
Fixes #56405.


git-svn-id: https://develop.svn.wordpress.org/trunk@54268 602fd350-edb4-49c9-b593-d223f7449a82

Author: audrasjb

src/wp-admin/theme-install.php

@@ -141,7 +141,7 @@
 // Help tab: Block themes.
 $help_block_themes =
 	'<p>' . __( 'A block theme is a theme that uses blocks for all parts of a site including navigation menus, header, content, and site footer. These themes are built for the features that allow you to edit and customize all parts of your site.' ) . '</p>' .
-	'<p>' . __( ' With a block theme, you can place and edit blocks without affecting your content by customizing or creating new templates.' ) . '</p>';
+	'<p>' . __( 'With a block theme, you can place and edit blocks without affecting your content by customizing or creating new templates.' ) . '</p>';
 
 get_current_screen()->add_help_tab(
 	array(