Resolve "Branch names in system notes have incorrect color"

app/assets/stylesheets/bootstrap_migration.scss

@@ -53,6 +53,12 @@ a {
   }
 }
 
+code {
+  padding: 2px 4px;
+  background-color: $red-100;
+  border-radius: 3px;
+}
+
 table {
   // Remove any table border lines
   border-spacing: 0;

app/assets/stylesheets/framework/typography.scss

@@ -340,10 +340,6 @@ code {
   }
 }
 
-a > code {
-  color: $link-color;
-}
-
 .monospace {
   font-family: $monospace_font;
 }