[OsSettingsLanguages] Update spell check language list padding start

list-frame default padding is 60px, update to 40px because top-level
spell check title has a 20px padding, spell check languages title
has 60px padding, making it a 40px visual indentation.

Old view: http://screen/7REeFrimicVBjWM
New view: http://screen/6kZ4if6qVnZjKso

Bug: 1113439
Change-Id: I24bb4e805d64f1adb5772355a3de9823a079a23a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2437544Reviewed-by: Regan Hsu <hsuregan@chromium.org>
Commit-Queue: My Nguyen <myy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#811675}

chrome/browser/resources/settings/chromeos/os_languages_page/input_page.html

@@ -89,6 +89,7 @@
 
       .subsection .list-frame {
         padding-inline-end: 0;
+        padding-inline-start: 40px;
       }
 
       .subsection > settings-toggle-button,