I18N: Update some strings to have periods.

Fixes #50707.
Props ramiy, afercia, audrasjb.


git-svn-id: https://develop.svn.wordpress.org/trunk@48567 602fd350-edb4-49c9-b593-d223f7449a82

src/js/_enqueues/wp/updates.js

@@ -504,7 +504,7 @@
 						'aria-label',
 						sprintf(
 							/* translators: %s: Plugin name and version. */
-							_x( '%s update failed', 'plugin' ),
+							_x( '%s update failed.', 'plugin' ),
 							response.pluginName
 						)
 					);
@@ -529,7 +529,7 @@
 						'aria-label',
 						sprintf(
 							/* translators: %s: Plugin name and version. */
-							_x( '%s update failed', 'plugin' ),
+							_x( '%s update failed.', 'plugin' ),
 							response.pluginName
 						)
 					);