add p-code-yaml

Author: ilayda-cp

static/sass/_snapcraft_show-more.scss

@@ -13,4 +13,13 @@
       }
     }
   }
+
+  .p-code-yaml {
+    font-size: 14px;
+    line-height: 1.5em;
+
+    b {
+      color: $color-positive;
+    }
+  }
 }