HOLD: Add reference to excluding defaults. (#84)

Author: blackbaud-johnly

src/app/learn/get-started/basics/navigate-spa/index.html

@@ -24,7 +24,7 @@
     If this SPA has a <stache-code>svcid</stache-code> of "abc" and an <stache-code>envid</stache-code> of "1234," the sample directs users to <stache-code>/sample-spa/sample-route?svcid=abc&envid=1234</stache-code>.
   </p>
   <p>
-    You can also use <stache-code>routerLink</stache-code> to specify the path to link to and then use the <stache-code>queryParams</stache-code> attribute to manually specify the SPA's parameters, but we recommend letting the <stache-code>SkyAppLink</stache-code> directive handle this for you.
+    You can also use <stache-code>routerLink</stache-code> to specify the path to link to and then use the <stache-code>queryParams</stache-code> attribute to manually specify the SPA's parameters, but we recommend letting the <stache-code>SkyAppLink</stache-code> directive handle this for you. Keep in mind that if a parameter's current value is the same as the default value from <stache-code>skyuxconfig.json</stache-code>, the <stache-code>SkyAppLink</stache-code> directive does not include the parameter in the query string.
   </p>
 
   <stache-page-anchor>