remove fancy quotes from all production types

Author: tabatkins

default.css

@@ -184,6 +184,8 @@ code.xml { color: #600 }	/* inline XML */
 [data-link-type="at-rule"]::after, 
 [data-link-type="selector"]::after, 
 [data-link-type="maybe"]::after {content: "\2019";}
+[data-link-type].production::before,
+[data-link-type].production::after { content: ""; }
 
 dfn { font-weight: bolder; }
 a > i { font-style: normal; } /* Instance of term */