The alignment of chrome version number content/text description should be proper.

BUG=455084

Review URL: https://codereview.chromium.org/893963004

Cr-Commit-Position: refs/heads/master@{#315121}

chrome/browser/resources/about_version.css

@@ -59,4 +59,5 @@ body {
   font-family: monospace;
   max-width: 430px;
   padding-left: 5px;
+  vertical-align: bottom;
 }