Make the DFW paragraph on the About page narrower to mitigate an orphan in Firefox.

See #30435
Props melchoyce


git-svn-id: https://develop.svn.wordpress.org/trunk@30921 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-admin/css/about.css

@@ -197,7 +197,7 @@
 }
 
 .about-wrap .dfw p {
-	max-width: 70%;
+	max-width: 68%;
 	margin: 0 auto 20px;
 }