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

Merges [30921] to the 4.1 branch.

See #30435
Props melchoyce

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git-svn-id: http://core.svn.wordpress.org/branches/4.1@30911 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/css/about-rtl.css

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

wp-admin/css/about.css

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